

Read the text below and decide which answer A, B, C, or D, best fits each space.
Everyone wants to reduce pollution. But the pollution problem is (1)______ complicated as it is serious. It is complicated (2)______ much pollution is caused by things that benefit people. (3)______, exhaust from automobiles causes a large percentage of air pollution. But the automobile (4)______ transportation for millions of people. Factories discharge much (5)______ the material that pollutes the air and water, but factories give employment to a large number of people.
Thus, to end (6)_______ greatly reduce pollution immediately, people would have to (7)______ using many things that benefit them. Most of the people do not want to do that, of course. But pollution can be (8)______ reduced in several ways. Scientists and engineers can work to find ways to lessen the (9)______ of pollution that such things as automobiles and factories cause. Governments can pass and enforce laws that (10)______ businesses and traffic to stop, or to cut down on certain polluting activities.
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Everyone wants to reduce pollution. But the pollution problem is (1)______ complicated as it is serious. It is complicated (2)______ much pollution is caused by things that benefit people. (3)______, exhaust from automobiles causes a large percentage of air pollution. But the automobile (4)______ transportation for millions of people. Factories discharge much (5)______ the material that pollutes the air and water, but factories give employment to a large number of people.
Thus, to end (6)_______ greatly reduce pollution immediately, people would have to (7)______ using many things that benefit them. Most of the people do not want to do that, of course. But pollution can be (8)______ reduced in several ways. Scientists and engineers can work to find ways to lessen the (9)______ of pollution that such things as automobiles and factories cause. Governments can pass and enforce laws that (10)______ businesses and traffic to stop, or to cut down on certain polluting activities.
1. | A. as | B. more | C. less | D. like |
2. | A. so | B. while | C. though | D. because |
3. | A. Specific | B. For example | C. Such as | D. Like |
4. | A. takes | B. affords | C. carries | D. provides |
5. | A. about | B. for | C. of | D. with |
6. | A. or | B. and | C. as well | D. then |
7. | A. start | B. continue | C. stop | D. go on |
8. | A. carefully | B. unexpectedly | C. gradually | D. little |
9. | A. way | B. figure | C. number | D. amount |
10. | A. forbid | B. prevent | C. request | D. require |