-No, he _____ at that time.

A. was boarding B. would be boarding C. will be boarding D. is boarding

10. Sometimes, the kind of food we serve a person suggests _____ we show our gratitude.

A. when B. what C. why D. how

11. Men must consider eating, drinking, clothing and finding shelter _____ they can pursue entertainment and recreation.

A. until B. unless C. before D. because

12. To be an expert, a beginner needs to go through a series of _____ stages.

A. intermediate B. liberal C. overall D. demanding

13. Keep up your spirits even if you _____ fail hundreds of times.

A. must B. need C. may D. should

14. -That's the third time you've done that!

　-Yeah, _____?

A. what of it B. what's on C. what about D. what for

15. It is unwise to disturb one who is devoted to his work. Just _____.

A. face the music B. fly off the handle

C. eat your words D. bite your tongue

第二节 完形填空（共20小题；每小题1分，满分20分）

　　请认真阅读下面短文，从短文后各题所给的A、B、C、D四个选项中，选出最佳选项，并在答题卡上将该项涂黑。

　　For our family vacations when our children were younger, we often went river rafting. Rafting meant we could be together as a family, 16 with the beauty of nature, and meet other people. Plus, it was 17 , and being on the river meant our family never had to ask that 18 of questions: "What are we going to do today?" It was always clear - 19 the boat and paddle downstream! This was our method for strengthening family bonds with less 20 .

We also found that the river is always a great 21 . For example, sometimes your boat goes through a particularly difficult rapid and you find yourself thrown out of the boat and into the water. When this happens, sometimes you get caught in a