BD HS GIOI 9

PRETEST 8

Use the verb in parentheses in their correct tense forms:

I (1.have)……….a letter from my sister yesterday. She (2.live)……….in Nigeria. In her letter, she (3.say)……….that she (4.come)……….to England next year. If she (5.come)………, she (6.get)………..a surprise. We (7.now live)……….in a beautiful new house in the country. Work on it (8.begin)………..before my sister (9.leave)……….The house (10.complete)…………five months ago. In my letter, I (11.tell)………..her that she could stay with us. The house (12.have)……….many large room. It (13.be)……….a very modern house, so it (14.look)…………strange to some people.

Read the passage and choose the best answer:

A shuttle is a vehicle that travels back and forth frequently. A space shuttle is a vehicle that travels into space and back again. It can be used again and again.
On April 12, 1981, the United States launched the first space shuttle, Columbia. At 7.00 am, the engines were fired. The booster rockets and the Space Shuttle lifted off into the air. Two minutes later, the booster, rockets and the Space Shuttle separated. Parachutes took the rockets safely down into the Pacific Ocean, where ships were waiting to pick them up. Columbia continued to climb on an orbit of 170 miles above the earth. The Space Shuttle circled the earth 36 times. During this time, the astronauts tested the equipment on the Shuttle. They also opened and close the large cargo doors. Two days later, they fired the Shuttle’s engines. This slowed down the Shuttle. John Young, a top pilot, took the controls of Columbia. He entered the earth`s atmosphere and headed toward California. Then he made a perfect landing at Edwards Air Force base.
Since then, Columbia has travelled into space more than seven times. The second Shuttle, Challenger, is also operating. "NASA" is building two more space Shuttles. It is planning over 60 more Shuttle flights. Some will launch Satellites through the cargo doors. Some will try to manufacture drugs and chemicals in space. One will carry a large telescope into orbit which will send pictures back to earth. It is impossible that some day in the future, Space Shuttles will carry passengers to the moon.

1. A Space Shuttle can
be used seven times and carry passengers to the moon.
be used over sixty times and can launch Satellites from it.
be used again and again and can recover a large telescope.
be used many times and can do experiments in space.

2. The rockets were taken safely down into the Pacific Ocean by
A. firing the engines. B. ships which were waiting.
C. large parachutes after separating. D. taking the controls of Colombia.

3. The astronauts tested the equipment on the shuttle, even the large cargo doors. The cargo doors
weren`t important but they wanted to test them in space.
were important because they would launch satellites through them later.
were stuck. D. would let the astronauts out.

4. Which statement is not true?`
In the past, before space shuttles, a spacecraft could only be used one two times.
Space Shuttles will help scientists learn more about space.
The rockets separated from the space shuttle when it was in orbit.
Colombia will make many more space flights.
5. John Young was
an excellent pilot and he made a perfect landing.
a pilot at the top of the shuttle and he made a perfect landing.
a gentle pilot and he took the control of Colombia.
D. a top of the space shuttle and took the controls of Colombia.

III. Read the passage and answer following questions:
There are many sources of pollution in our modern world. At present, the most serious sources are acid rain, car exhaust fumes and oil spills.
Factory chimneys give out smoke that contains sulphur dioxide and nitrogen oxide. These gases combine with the moisture in the atmosphere to form sulphuric acid and nitric acid. When it rains, these acids dissolve in the rain and make it acidic. Acid rain is believed to be the worst pollution problem of all. It has harmed aquatic life by turning many lakes into lifeless bodies of water. In these areas, there is no limestone in the rocks to neutralize the acid rain naturally. One remedy is to pump limestone into the acidic lakes. However, it is not possible to do this on a large enough scale to save all the lakes.
Car exhaust fumes contain carbon monoxide and lead which are highly poisonous. In big cities, exhaust fumes build up and pose a health hazard to human beings.
Pollution of the sea by oil threatens marine life. Much of