问题描述：
| Where have you been all these days? We are very _____ about your safety. |
| [ ] |
| A. interested B. frightened C. surprised D. concerned |
考点提示：形容词
最佳答案：
| D |
问题描述：
| Where have you been all these days? We are very _____ about your safety. |
| [ ] |
| A. interested B. frightened C. surprised D. concerned |
考点提示：形容词
| D |
上一篇：如图所示，半径为R的环形塑料管竖直放置，AB为该环的水平直径，且管的内径远小于环的半径，环的AB及以下部分处于水平向左的匀强电场中，管的内壁光滑．现将一品质为m，带电量为+q的
下一篇：The reporter _____ that the girl who was so _____ was trying not to answer the question. [ ]A. recog