22．The demand for organic food ____ by about one third every year, so it is a very fast-growing market.

　　　 A．has increased　　 B．increased　 　　　　 C．will increase　 　　 D．is increasing

第一节: 单项填空(共15小题；每小题1分，满分15分)

21．Some people believe that Mars(　火星) could support ___ life in the future if __ right conditions were produced.

　　　 A．the; the　　 　　　 B．x; x　 　　　　　　　 C．x; the　　 　　　　 D．the ; x

15.　 It was _____ back home after the experiment.

A. not until midnight did he go　 B. until midnight that he didn’t go

C. not until midnight that he went　 D. until midnight when he didn’t go

14.　 Why! I have nothing to confess. _______ you want me to say?

A. What is it that　 B. What it is that　 C. How is it that　　 D. How it is that

13.　 ______ is reported in the newspapers, talks between the two countries are making progress.

A. It　　 B. As　　 C. That　　 D. What

12.　 It was only with the help of the local guide ________.

A.　　 was the mountain climber was rescued　 B. that the mountain climber was rescued

C. when the mountain climber was rescued　 D. then the mountain climber was rescued

11.　 More and more people choose to shop in a supermarket as it offers a great _______ of goods.

　　 A.　 variety　 B. mixture　 C. extension　 D. combination

10.　 Was ______ that I saw last night at the concert?

　　 A. it you　 B. not you　 C. you　　 D. that yourself

9.　　　 The weather turned out to be very good, ______ was more that we had expected.

A. what　 B. which　　 C. that　　 D. it

8.　　　 ---He was nearly drowned once.

---When was _______?

---_______ was in 1998 when he was in middle school.

A. that；It　 B. this, This　 C. this, It　　 D. that, This