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Read the passage below and choose one correct answer for each question.

Global warming and cooling have occurred naturally throughout history. But in the last 200 years, humans’ uses of fossil fuels and clear cutting of forests have increased the amount of carbon dioxide and other gases in the atmosphere. These gases trap some of the radiation from the sun which then increases the Earth’s temperature. Given the current state of environmental pollution caused by human activities, scientists believe the average temperature of the earth may increase 1-2 degrees Celsius which put simply, means some places will get much hotter and some much colder. At the same time, this overall warming effect means more frequent and more intense weather systems, especially in terms of flooding and drought.    

Viet Nam is one of the most vulnerable environments due to its location on the planet. It is already subject to some of the earth’s most powerful weather systems and the increased frequency and intensity of storms will affect it often and directly, especially in coastal areas where most people live. Various estimates have been made as to the possible impacts. The most directly affected sector will be agriculture, which is very sensitive to flooding and the effects of extreme weather.

Viet Nam has the advantage of coming relatively late into the industrialization, urbanization, and modernization process. This means it can avoid many of the mistakes made by wealthier industrial countries. For example, wireless communication networks can be built from the start rather than installing lines that can easily be destroyed in extreme weather. Cities can be designed and located in less vulnerable locations. Climate-friendly building codes and standards can be created that are both more efficient and less prone to heat stress, wind damage, and flooding. Climate friendly transport systems, especially public transport, can be adopted.

The vast, humid expanse of the delta is home to more than 17 million people, who (4)_______ for generations on its thousands of river arteries.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42

Today, Snyder is seeing the fruits of the collaboration. In a recent issue of the Journal of Comparative Psychology (Vol. 117, No. 3), the research group published the first study of giant panda cub-rearing and separation. The study is the first step in examining the impact of a common breeding practice in China: separating captive cubs before they are six months old so that the mothers will be able to reproduce again sooner. Cubs in the wild stay with their mothers for 1.5 to 2.5 years.

Snyder and her co-authors, including Maple and psychologist Mollie Bloomsmith, PhD, theorize that separating cubs from their mothers too early may harm their social development, and could underlie why so many captive pandas fail to breed. Captive males often show little sexual interest in females or are too aggressive.

The research team has also conducted urinary and behavioral analyses of female giant pandas during the breeding season, which is generally in the spring, and is examining the behavior of giant panda mothers. Graduate student Megan Wilson, who also has worked in Chengdu, is investigating sequences of play-fighting for her dissertation. And former graduate student and Chengdu researcher Loraine Tarou, PhD, examined giant panda cognition.

Tarou, now an assistant professor at Grand Valley State University in Michigan, is the first to examine how captive pandas forage for food and learn to adapt to changes in their environment. She compared her findings with the cognition of the spectacled bear and found that while both use spatial memory to find food, the spectacled bears used visual cues the pandas did not pick up on.

The finding indicates that giant pandas' reliance on spatial memory alone may cause them to have difficulty when their food sources are abruptly changed or moved--a big problem for an animal that consumes nearly 30 pounds of bamboo a day.

While such basic research may not have immediate application, says Tarou, it is contributing to scientists' growing knowledge of the species.

(Adapted from https://www.apa.org/)

The word “conducted” in paragraph 3 is closest in meaning to ______. 

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 30 to 34.

Genetic modification of foods is not a new practice. It has been practiced for thousands of years under the name of "selective breeding". Animals and plants were chosen because they had traits that humans found useful. Some animals were larger and stronger than others, or they yielded more food, or they had some other trait that humans valued. Therefore, they were bred because of those traits. Individuals with those traits were brought together and allowed to breed in the hope that their offspring would have the same traits in greater measure.

Much the same thing was done with plants. To produce bigger or sweeter fruit, or grow more grain per unit of land, strains of plants were combined and recombined to produce hybrids, or crossbreeds that had the desired traits in the right combinations. All the while, however, biologists wondered: is there a more direct and versatile way to change the traits of plants and animals? Could we rewrite, so to speak, the heredity of organisms to make them serve our needs better?

In the 20th century, genetic modification made such changes possible at last. Now, it was possible to alter the genetic code without using the slow and uncertain process of selective breeding. It even became possible to blend plants and animals genetically: to insert animal genes into plants, for example, in order to give the plants a certain trait they ordinarily would lack, such as resistance to freezing. The result was a tremendous potential to change the very nature of biology.

Which of the following IS NOT achieved by genetic modification?

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

      At 7 pm on a dark, cold November evening, thousands of people are making their way across a vast car park. They're not here to see a film, or the ballet, or even the circus. They are all here for what is, bizarrely, a global phenomenon: they are here to see Holiday on Ice. Given that most people don’t seem to be acquainted with anyone who's ever been, the show's statistics are extraordinary: nearly 300 million people have seen Holiday on Ice since it began in 1943; it is the most popular live entertainment in the world.

      But what does the production involve? And why are so many people prepared to spend their lives travelling round Europe in caravans in order to appear in it? It can't be glamorous, and it's undoubtedly hard work. The backstage atmosphere is an odd mix of gym class and workplace. A curtained-off section at the back of the arena is laughably referred to as the girls' dressing room, but is more accurately described as a corridor, with beige, cracked walls and cheap temporary tables set up along the length of it. Each girl has a small area littered with pots of orange make-up, tubes of mascara and long false eyelashes.

      As a place to work, it must rank pretty low down the scale: the area round the ice-rink is grey and mucky with rows of dirty blue and brown plastic seating and red carpet tiles. It's an unimpressive picture, but the show itself is an unquestionably vast, polished global enterprise: the lights come from a firm in Texas, the people who make the audio system are in California, but Montreal supplies the smoke effects; former British Olympic skater Robin Cousins is now creative director for the company and conducts a vast master class to make sure they're ready for the show's next performance.

      The next day, as the music blares out from the sound system, the case start to go through their routines under Cousins' direction. Cousins says, 'The aim is to make sure they're all still getting to exactly the right place on the ice at the right time - largely because the banks of lights in the ceiling are set to those places, and if the skaters are all half a metre out they'll be illuminating empty ice. Our challenge, ' he continues, 'is to produce something they can sell in a number of countries at the same time. My theory is that you take those things that people want to see and you give it to them, but not in the way they expect to see it. You try to twist it. And you have to find music that is challenging to the skaters, because they have to do it every night.'

      It may be a job which he took to pay the rent, but you can’t doubt his enthusiasm. 'They only place you'll see certain skating moves is an ice show,' he says, 'because you're not allowed to do them in competition. It's not in the rules. So the ice show word has things to offer which the competitive world just doesn't. Cousins knows what he's talking about because he skated for the show himself when he stopped competing - he was financially unable to retire. He learnt the hard way that you can't put on an Olympic performance every night. I'd be thinking, these people have paid their money, now do your stuff, and I suddenly thought, "I really can't cope. I'm not enjoying it".' The solution, he realized, was to give 75 per cent every night, rather than striving for the sort of twice-a-year excellence which won him medals.

          To be honest, for those of us whose only experience of ice-skating is watching top-class Olympic skaters, some of the movements can look a bit amateurish, but then, who are we to judge? Equally, it's impossible not to be swept up in the whole thing; well, you'd have to try pretty hard not to enjoy it.

What is meant by 'the hard way'?