3.　　 　the problem may be, we must solve it ourselves.

　A. Whatever difficult　　　　 B. How difficult

C. However difficult　　　　 D. No matter what difficult

2. Charles Babbage is generally considered 　　　the first computer.

A. to invent　　　　　 B. inventing

C. to have invented　　 D. having invented

从A、B、C和D四个选项中，选出可以填入空白处的最佳选项。

1. Although different in many ways, the British and the Americans 　　　　many of the same customs.

　A. make　　 B. take　 C. share　　 D. give

5. 她极为崇拜你。

4. 价格随户型而有所变化。

3. 他夹着一本厚书，离开了图书馆。

2. 我正要睡觉，这时电话铃响了。

1. 你的训练将使得你能够胜任将来的工作。

5. 　　　　　(accept) as a member of the company, he took over the job of the former secretary.

4. 　　　　　(not receive) her letter for a long time, I phoned her to see what was wrong.