卫生类B级：词汇选项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