衛(wèi)生類B級(jí)：詞匯選項(xiàng)background

　　1 In the background was that eternal hum.

　　A long B never-ending

　　C boring D extensive

　　2 The Constitutions vague nature has given it the flexibility to be adapted when circumstances change.

　　A imprecise B apparent

　　C clear 13 easy

　　3 Gambling is lawful in Nevada.

　　A enjoyable B irresistible

　　C legal D profitable

　　4 These are the motives for doing it.

　　A reasons B excuses

　　C answers D replies

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

　　A extends B stretches

　　C broadens 13 bends

　　6 Many economists have given in to the fatal lure of mathematics.

　　A error B puzzle

　　C attraction D contradiction

　　7 With immense relief I stopped running.

　　A no B little

　　C scarce D enormous

　　8 A great deal has been done to remedy the situation

　　A maintain B improve

　　C preserve D protect

　　答案：1. B 2. A 3. C 4. A 5. C 6. C 7. D 8. B