9 The Constitutions vague nature has given it the flexibility to be adapted when circumstances change.
A imprecise B apparent
C clear 13 easy
10 Gambling is lawful in Nevada.
A enjoyable B irresistible
C legal D profitable
11 These are the motives for doing it.
A reasons B excuses
C answers D replies
12 The river widens considerably as it begins to turn west.
A extends B stretches
C broadens 13 bends
13 Many economists have given in to the fatal lure of mathematics.
A error B puzzle
C attraction D contradiction
14 With immense relief I stopped running.
A no B little
C scarce D enormous
15 A great deal has been done to remedy the situation
A maintain B improve
C preserve D protect
参考答案1. C 2. B 3. D 4. D 5. B6. A 7. D 8. B 9. A 10. C11. A 12. C 13. C 14. D 15. B