15. I was unaware of the critical points involved, so my choice was quite _________.
A. artistic B. artificial C. arbitrary D. mechanical
16. Sometimes the student may be asked to write about his ________ to a certain book or article that has some bearing on the subject being studied.
A. impression B. reaction C. comprehension D. sentiment
17. We’d decided to sell our car, but then we began to have second ________.
A. plans B. minds C. ideas D. thoughts
18. The mystery guest on the show is ________ other than the President.
A. no B. none C. not D. nothing
19. During the recession they ________ the workers off for three months.
A. gave B. laid C. called D. dropped
20. I haven’t enough money to buy a car, so I just have to do _______.
A. nothing B. none C. without D. nobody
参考答案:
1. 答案为C。worthwhile 意思是“值得花费时间、金钱或精力的”。worthy 可以表示“值得尊重或者考虑的”,用这一意思时通常做定语。worthiness 是worthy 的名词形式。worth 用作表语,意思是“有某种价值的;值得(做某事)”。本句需要填入一个作定语的形容词,所以, C 是正确答案。
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