第二部分 英语知识运用(共两节, 满分45分)
第一节 单项填空(共15小题；每小题1分，满分15分)
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
21.［2012三明模拟］—Jimmy had a lot of parties recently.
—Yes, that might ________ why he didn’t do well on the test.
A. come up with B. bring about
C. account for D. make sense of
22. The idea they have come up with sounds great, but it remains ________ whether it works well in practice．
A. to see B. to be seen C. seeing D. seen
23. You should talk to your children about how they should handle dangerous ________ .
A. instructions B. situations
C. contents D. warnings
