6. They are trying to ________ the waste discharged by the factory for profit.

A) expose B) exhaust C) exhibit D) exploit

7. The manager urged his staff not to ________ the splendid opportunity.

A) drop B) miss C) escape D) slide

8. ________ I admire David as a poet， I do not like him as a man.

A) Much as B) Only if C) If only D) As much

9. Because of a ________ engagement， Lora couldn‘t attend my birthday party last Saturday. A) pioneer B) premature C) prior D) past

10. The continuous rain ________ the harvesting of the wheat crop by two weeks.

A) set back B) set off C) set out D) set aside

 DBACA