问题描述：
| This kind of exercise is most _____, and therefore is a good test of you students' ability. |
| [ ] |
| A. surprising B. encouraging C. exciting D. challenging |
考点提示：形容词
最佳答案：
| D |
问题描述：
| This kind of exercise is most _____, and therefore is a good test of you students' ability. |
| [ ] |
| A. surprising B. encouraging C. exciting D. challenging |
考点提示：形容词
| D |
上一篇：What he said at the meeting is really _____, so many people were _____. [ ]A. confused; confusing B.
下一篇：Medicine should not be kept where it is ______ to children. [ ]A. easy B. high C. accessible D. acce