Check the meaning of the words in the box. Then read and complete the text with the words from the box. Listen and check. (Kiểm tra nghĩa của các từ trong hộp. Sau đó, đọc và hoàn thành văn bản với các từ trong hộp. Nghe và kiểm tra.)

The USA invented the Global Positioning System (GPS) in the 1970s. At first, it was a military project, but now anyone can use the system to find out exactly their locations, and (1) their movements.

For GPS to work, your (2) (or smartphone) must be in contact with four or more satellites in space.

Then it uses the data to calculate the exact time and position on Earth. However, it is not enough for survival situations (escaping the jungles or deserts) because you must know your direction (which way you are moving) and your (3) (how fast you are moving). GPS provides this information, by tracking your position over time.

For modern explorers, a smartphone and GPS are as important as a compass, torch and map. With the right (4), your smartphone will help you survive.

is / he / to / going / a / be / star / .

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young / has / singer / an / voice / amazing / that / .

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would / he / to / like / be / a / star / pop / .

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learn / a / musical / we / are/ to / going / instrument / .

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Rearrange the words in a correct order to make a complete sentence.

I / write / a / will / song/ new / .

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II. Choose the option that best completes each blank in the passage. Write A, B, or C in the blank.

Nothing to Lose

We (1) fossil fuels in our daily life, but they are limited and cause pollution. A lot of scientists are working hard to look for some lossless and environmentally (2) sources of energy.

Solar energy is not new to us (3) we use it to dry things every day. Solar panels catch sun rays and change them into electricity. We know that it is renewable because the sun never stops producing sunlight.

Wind power is also an old source of energy. In the past, explorers used wind for sailing their (4) to distant lands. A single windmill can pump water and generate electricity. To get much more power all at once, people install lots of giant wind turbines on wind farms.

If we stop using fossil fuels, our planets will be (5). There is nothing to lose when we use solar energy or wind power.