1. These aretheir motives for doing it.

　　A.reasons

　　B.excuses

　　C.answers

　　D.plans

　　2. The river widens considerably as it begins to turn west.

　　A.twists

　　B.stretches

　　C.broadens

　　D.bends

　　3. Henrycannot resist the lure of drugs.

　　A.abuse

　　B.flavor

　　C.temptation

　　D.consumption

　　4. Theseprogrammes are of immense value to old people.

　　A.natural

　　B.fatal

　　C.tiny

　　D.enormous

　　5. A greatdeal has been done to remedy the situation.

　　A.maintain

　　B.improve

　　C.assess

　　D.protect

　　参考答案：1. A 2. C 3.C 4. D 5. B

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