I. Choose the word whose underlined part is pronounced differently. ⇱
II. Choose the word that has a different stressed syllable from the rest. ⇱
III. Choose the best option (A, B, C or D) to complete each of the following questions. ⇱
IV. Write the correct form of the words in brackets. ⇱
V. Choose the option that best completes each blank in the passage. Write A, B, or C in the blank. ⇱
GPS and Survival
The USA ___(21)___ 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 ___(22)___ their movements.
For GPS to work, your receiver (or smartphone) must be in contact with four or more satellites in space. Then it uses the data to calculate the exact time and ___(23)___ 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 speed - how ___(24)___ 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 a map. With the right applications, your ___(25)___ will help you survive.
VI. Read the passage and decide whether the statements are TRUE (T) or FALSE (F). ⇱
Nothing to Lose
We use 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 friendly sources of energy.
Solar energy is not new to us because 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 ships 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 greener. There is nothing to lose when we use solar energy or wind power.