Read the following passage and mark the letter A, B, C or B on your answer sheet to indicate the correct answer to each of the questions from 30 to 37.

  Many ants forage across the countryside in large numbers and undertake mass migrations; these activities proceed because one ant lays a trail on the ground for the others to follow. As a worker ant returns home after finding a source of food, it marks the route Line by intermittently touching its stinger to the ground and depositing a tiny amount of trail pheromone – a mixture of chemicals that delivers diverse messages as the context changes.

  These trails incorporate no directional information and may be followed by other ants in either direction. Unlike some other messages, such as the one arising from a dead ant, a food trail has to be kept secret from members of other species. It is not surprising then that ant species use a wide variety of compounds as trail pheromones. Ants can be extremely sensitive to these signals. Investigators working with the trail pheromone of the leafcutter ant Atta texana calculated that one milligram of this substance would suffice to lead a column of ants three times around Earth. The vapor of the evaporating pheromone over the trail guides an ant along the way,  and the ant detects this signal with receptors in its antennae. A trail pheromone will evaporate to furnish the highest concentration of vapor right over the trail, in what is called a vapor space. In following the trail, the ant moves to the right and left, oscillating from side to side across the line of the trail itself, bringing first one and then the other antenna into the vapor space. As the ant moves to the right, its left antenna arrives in the vapor space. The signal it receives causes it to swing to the left, and the ant then pursues this new course until its right antenna reaches the vapor space. It then swings back to the right, and so weaves back and forth down the trail.

The author mentions the trail pheromone of the leafcutter ant in line 11 to point out

Read the following passage and mark the letter A, B, C or B on your answer sheet to indicate the correct answer to each of the questions from 30 to 37.

  Many ants forage across the countryside in large numbers and undertake mass migrations; these activities proceed because one ant lays a trail on the ground for the others to follow. As a worker ant returns home after finding a source of food, it marks the route Line by intermittently touching its stinger to the ground and depositing a tiny amount of trail pheromone – a mixture of chemicals that delivers diverse messages as the context changes.

  These trails incorporate no directional information and may be followed by other ants in either direction. Unlike some other messages, such as the one arising from a dead ant, a food trail has to be kept secret from members of other species. It is not surprising then that ant species use a wide variety of compounds as trail pheromones. Ants can be extremely sensitive to these signals. Investigators working with the trail pheromone of the leafcutter ant Atta texana calculated that one milligram of this substance would suffice to lead a column of ants three times around Earth. The vapor of the evaporating pheromone over the trail guides an ant along the way,  and the ant detects this signal with receptors in its antennae. A trail pheromone will evaporate to furnish the highest concentration of vapor right over the trail, in what is called a vapor space. In following the trail, the ant moves to the right and left, oscillating from side to side across the line of the trail itself, bringing first one and then the other antenna into the vapor space. As the ant moves to the right, its left antenna arrives in the vapor space. The signal it receives causes it to swing to the left, and the ant then pursues this new course until its right antenna reaches the vapor space. It then swings back to the right, and so weaves back and forth down the trail.

According to the passage, why do ants use different compounds as trail pheromones?

Read the following passage and mark the letter A, B, C or B on your answer sheet to indicate the correct answer to each of the questions from 30 to 37.

  Many ants forage across the countryside in large numbers and undertake mass migrations; these activities proceed because one ant lays a trail on the ground for the others to follow. As a worker ant returns home after finding a source of food, it marks the route Line by intermittently touching its stinger to the ground and depositing a tiny amount of trail pheromone – a mixture of chemicals that delivers diverse messages as the context changes.

  These trails incorporate no directional information and may be followed by other ants in either direction. Unlike some other messages, such as the one arising from a dead ant, a food trail has to be kept secret from members of other species. It is not surprising then that ant species use a wide variety of compounds as trail pheromones. Ants can be extremely sensitive to these signals. Investigators working with the trail pheromone of the leafcutter ant Atta texana calculated that one milligram of this substance would suffice to lead a column of ants three times around Earth. The vapor of the evaporating pheromone over the trail guides an ant along the way,  and the ant detects this signal with receptors in its antennae. A trail pheromone will evaporate to furnish the highest concentration of vapor right over the trail, in what is called a vapor space. In following the trail, the ant moves to the right and left, oscillating from side to side across the line of the trail itself, bringing first one and then the other antenna into the vapor space. As the ant moves to the right, its left antenna arrives in the vapor space. The signal it receives causes it to swing to the left, and the ant then pursues this new course until its right antenna reaches the vapor space. It then swings back to the right, and so weaves back and forth down the trail.

The phrase “the one” in line 8 refers to a single

Read the following passage and mark the letter A, B, C or B on your answer sheet to indicate the correct answer to each of the questions from 30 to 37.

  Many ants forage across the countryside in large numbers and undertake mass migrations; these activities proceed because one ant lays a trail on the ground for the others to follow. As a worker ant returns home after finding a source of food, it marks the route Line by intermittently touching its stinger to the ground and depositing a tiny amount of trail pheromone – a mixture of chemicals that delivers diverse messages as the context changes.

  These trails incorporate no directional information and may be followed by other ants in either direction. Unlike some other messages, such as the one arising from a dead ant, a food trail has to be kept secret from members of other species. It is not surprising then that ant species use a wide variety of compounds as trail pheromones. Ants can be extremely sensitive to these signals. Investigators working with the trail pheromone of the leafcutter ant Atta texana calculated that one milligram of this substance would suffice to lead a column of ants three times around Earth. The vapor of the evaporating pheromone over the trail guides an ant along the way,  and the ant detects this signal with receptors in its antennae. A trail pheromone will evaporate to furnish the highest concentration of vapor right over the trail, in what is called a vapor space. In following the trail, the ant moves to the right and left, oscillating from side to side across the line of the trail itself, bringing first one and then the other antenna into the vapor space. As the ant moves to the right, its left antenna arrives in the vapor space. The signal it receives causes it to swing to the left, and the ant then pursues this new course until its right antenna reaches the vapor space. It then swings back to the right, and so weaves back and forth down the trail.

The word “intermittently” in line 4 is closest in meaning to

Read the following passage and mark the letter A, B, C or B on your answer sheet to indicate the correct answer to each of the questions from 30 to 37.

  Many ants forage across the countryside in large numbers and undertake mass migrations; these activities proceed because one ant lays a trail on the ground for the others to follow. As a worker ant returns home after finding a source of food, it marks the route Line by intermittently touching its stinger to the ground and depositing a tiny amount of trail pheromone – a mixture of chemicals that delivers diverse messages as the context changes.

  These trails incorporate no directional information and may be followed by other ants in either direction. Unlike some other messages, such as the one arising from a dead ant, a food trail has to be kept secret from members of other species. It is not surprising then that ant species use a wide variety of compounds as trail pheromones. Ants can be extremely sensitive to these signals. Investigators working with the trail pheromone of the leafcutter ant Atta texana calculated that one milligram of this substance would suffice to lead a column of ants three times around Earth. The vapor of the evaporating pheromone over the trail guides an ant along the way,  and the ant detects this signal with receptors in its antennae. A trail pheromone will evaporate to furnish the highest concentration of vapor right over the trail, in what is called a vapor space. In following the trail, the ant moves to the right and left, oscillating from side to side across the line of the trail itself, bringing first one and then the other antenna into the vapor space. As the ant moves to the right, its left antenna arrives in the vapor space. The signal it receives causes it to swing to the left, and the ant then pursues this new course until its right antenna reaches the vapor space. It then swings back to the right, and so weaves back and forth down the trail.

What does the passage mainly discuss?

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 25 to 29. Fill in the appropriate word in question 29

  Most Americans eat three meals (25) ______ the day: breakfast, lunch, and dinner. Breakfast begins between 7:00 and 8:00am, lunch between 11:00 am and noon, and dinner between 6:00 and 8:00 pm. On Sundays "brunch" is a (26) ______ of breakfast and lunch, typically beginning at 11:00 am. Students often enjoy a "study break" or evening snack around 10:00 or 11:00 pm. Breakfast and lunch tend to be light meals, with only one course.

  Dinner is the main meal.

  For breakfast Americans will eat cereal with milk which are often mixed (27) ______ in a bowl, a glass of orange juice, and toasted bread or muffin with jam, butter, or margarine. Another common breakfast meal is scrambled eggs or an omelet with potatoes and breakfast meat (bacon or sausage). People who are on a diet eat just a cup of yogurt.

          Lunch and dinner are more (28) ______. When eating at a formal dinner, you may be overwhelmed by the number of utensils. How do you (29) ______ the difference between a salad fork, a butter fork, and a dessert fork? Most Americans do not know the answer. But knowing which fork or spoon to use first is simple: use the outermost utensils first and the utensils closest to the plate last

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 25 to 29. Fill in the appropriate word in question 28

  Most Americans eat three meals (25) ______ the day: breakfast, lunch, and dinner. Breakfast begins between 7:00 and 8:00am, lunch between 11:00 am and noon, and dinner between 6:00 and 8:00 pm. On Sundays "brunch" is a (26) ______ of breakfast and lunch, typically beginning at 11:00 am. Students often enjoy a "study break" or evening snack around 10:00 or 11:00 pm. Breakfast and lunch tend to be light meals, with only one course.

  Dinner is the main meal.

  For breakfast Americans will eat cereal with milk which are often mixed (27) ______ in a bowl, a glass of orange juice, and toasted bread or muffin with jam, butter, or margarine. Another common breakfast meal is scrambled eggs or an omelet with potatoes and breakfast meat (bacon or sausage). People who are on a diet eat just a cup of yogurt.

  Lunch and dinner are more (28) ______. When eating at a formal dinner, you may be overwhelmed by the number of utensils. How do you (29) ______ the difference between a salad fork, a butter fork, and a dessert fork? Most Americans do not know the answer. But knowing which fork or spoon to use first is simple: use the outermost utensils first and the utensils closest to the plate last.

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 25 to 29. Fill in the appropriate word in question 27

  Most Americans eat three meals (25) ______ the day: breakfast, lunch, and dinner. Breakfast begins between 7:00 and 8:00am, lunch between 11:00 am and noon, and dinner between 6:00 and 8:00 pm. On Sundays "brunch" is a (26) ______ of breakfast and lunch, typically beginning at 11:00 am. Students often enjoy a "study break" or evening snack around 10:00 or 11:00 pm. Breakfast and lunch tend to be light meals, with only one course.

  Dinner is the main meal.

  For breakfast Americans will eat cereal with milk which are often mixed (27) ______ in a bowl, a glass of orange juice, and toasted bread or muffin with jam, butter, or margarine. Another common breakfast meal is scrambled eggs or an omelet with potatoes and breakfast meat (bacon or sausage). People who are on a diet eat just a cup of yogurt.

  Lunch and dinner are more (28) ______. When eating at a formal dinner, you may be overwhelmed by the number of utensils. How do you (29) ______ the difference between a salad fork, a butter fork, and a dessert fork? Most Americans do not know the answer. But knowing which fork or spoon to use first is simple: use the outermost utensils first and the utensils closest to the plate last.

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 25 to 29. Fill in the appropriate word in question 26

  Most Americans eat three meals (25) ______ the day: breakfast, lunch, and dinner. Breakfast begins between 7:00 and 8:00am, lunch between 11:00 am and noon, and dinner between 6:00 and 8:00 pm. On Sundays "brunch" is a (26) ______ of breakfast and lunch, typically beginning at 11:00 am. Students often enjoy a "study break" or evening snack around 10:00 or 11:00 pm. Breakfast and lunch tend to be light meals, with only one course.

  Dinner is the main meal.

  For breakfast Americans will eat cereal with milk which are often mixed (27) ______ in a bowl, a glass of orange juice, and toasted bread or muffin with jam, butter, or margarine. Another common breakfast meal is scrambled eggs or an omelet with potatoes and breakfast meat (bacon or sausage). People who are on a diet eat just a cup of yogurt.

  Lunch and dinner are more (28) ______. When eating at a formal dinner, you may be overwhelmed by the number of utensils. How do you (29) ______ the difference between a salad fork, a butter fork, and a dessert fork? Most Americans do not know the answer. But knowing which fork or spoon to use first is simple: use the outermost utensils first and the utensils closest to the plate last.

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 25 to 29. Fill in the appropriate word in question 25

  Most Americans eat three meals (25) ______ the day: breakfast, lunch, and dinner. Breakfast begins between 7:00 and 8:00am, lunch between 11:00 am and noon, and dinner between 6:00 and 8:00 pm. On Sundays "brunch" is a (26) ______ of breakfast and lunch, typically beginning at 11:00 am. Students often enjoy a "study break" or evening snack around 10:00 or 11:00 pm. Breakfast and lunch tend to be light meals, with only one course.

  Dinner is the main meal.

  For breakfast Americans will eat cereal with milk which are often mixed (27) ______ in a bowl, a glass of orange juice, and toasted bread or muffin with jam, butter, or margarine. Another common breakfast meal is scrambled eggs or an omelet with potatoes and breakfast meat (bacon or sausage). People who are on a diet eat just a cup of yogurt.

  Lunch and dinner are more (28) ______. When eating at a formal dinner, you may be overwhelmed by the number of utensils. How do you (29) ______ the difference between a salad fork, a butter fork, and a dessert fork? Most Americans do not know the answer. But knowing which fork or spoon to use first is simple: use the outermost utensils first and the utensils closest to the plate last.

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.

Most deserts are enormous sandy areas.

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.

A _________ is a landscape or region that receives very little precipitation.

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.

There will be powerful network of computers which may come from a single computing _________ that is worn on or in the body.

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.

After more than a decade of Doi Moi or economic _________ , the Vietnamese Communist government has achieved diplomatic and economic links with numerous foreign partners.

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.

In the past, the trip _________ very rough and often dangerous, but things _________ a great deal in the last hundred and fifty years

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.

Women usually don’t shake hands when being _________.

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.

I met a lot of new people at the party _________ names I can’t remember.

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.

He took a lot of interest _________our work and he promised to help us _________ any troubles.

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.

There was a lot of traffic but we managed _________ to the airport in time.

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.

Tommy and Mary were mischievous children. They _________ tricks on their teachers, which always got them into a lot of trouble.

I told him _________ the word to Jane somehow that I _________ to reach her during the early hours.

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.

_________ the flight delay, they didn’t attend the conference.

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.

_________ who you are, I still love you.

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.

We depend on species diversity to provide food, clean air and water.

Mark the letter A, B, C or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.

There has been insufficient rainfall over the past two years, and farmers are having trouble.

Mark the letter A, B, C or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.

I lost contact with my family and friends since I lost my mobile phone.

Mark the letter A, B, C or D on your answer sheet to indicate the word(s) CLOSET in meaning to the underlined word(s) in each of the following questions.

We decided to pay for the furniture on the installment plan.

Mark the letter A, B, C or D on your answer sheet to indicate the word(s) CLOSET in meaning to the underlined word(s) in each of the following questions.

Ralph Nader was the most prominent leader of the U.S consumer protection movement.

Mark the letter A, B, C or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges.

The telephone rings but it is someone who has a wrong number, you put the phone down after saying:

Mark the letter A, B, C or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges.

“It’s kind of you to give me a ride to the station?” - “ _________ ”

Mark the letter A, B, C or D on your answer sheet to indicate the word whose underlined part differs from the other three III pronunciation In each of the following questions.

Mark the letter A, B, C or D on your answer sheet to indicate the word whose underlined part differs from the other three III pronunciation In each of the following questions.

Mark the letter A. B, C or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions.

Mark the letter A. B, C or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions.

Mark the letter A, B, C or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.

The man wanted to get some fresh air in the room. He opened the window

Mark the letter A, B, C or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.

Mr. Smith first met his partner in 2011.

Mark the letter A, B, C or B on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

(A) It was a nice day, (B) so we decided (C) going (D) for a walk.

Mark the letter A, B, C or B on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

(A) A new bridge (B) will be (C) build (D) over this river

Mark the letter A, B, C or B on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

(A) The place (B) which (C) he was bom is (D) now a big city.

Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.

When the birth rate is high, the expectation of life is low