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。
—I’m calling to say good-bye. I’m flying home tomorrow.
— .
| A. I’m sorry to hear that.C. I’m not sure. B. Congratulations!D. Have a nice trip! |
—Her concert was ______ big successs last night.
—I think it surely makes ______ difference for a new talent.
| A．不填；不填 | B．a; a | C．a; the | D．a; 不填 |
— I have a dream of being a pilot.
— ______ You are afraid of heights!
| A．I couldn’t agree more. | B．That’s a good point. |
| C．It sounds very nice. | D．You can’t be serious. |
An excellent musician can not only sing songs wonderfully but also ______ songs and even play several kinds of musical instruments.
| A．direct | B．compose | C．perform | D．act |
Over the past decades, China _______ significantly under the correct leadership of the CPC, he said. The CPC's 18th National Congress will exert great influences on China's future and Africa highly expects of China's further growth.
| A．changed | B．is changing | C．had changed | D．has changed |
It is in this laboratory ______ is run by Mr. Wu ______ the experiments are done.
| A．which; that | B．that; which | C．where; that | D．that; where |