1 . If you study ____________，you will witness thrilling ____________reactions in experiments.(chemical) (所给词的适当形式填空)

2 . Yuan Longping became the first agricultural pioneer in the world to grow rice that has a high   ________ (产量) in 1973. （根据汉语提示单词拼写）

3 . When we were only a few miles from our ________(目的地), the petrol gave out. (根据汉语提示单词拼写)

4 . The government’s __________(优先处理的事) is to build more power plants. (根据汉语提示单词拼写)

5 . Duties and taxes are the most obvious ____________(障碍) to free trade. (根据汉语提示单词拼写)

6 . My___________(助理) will demonstrate the machine in action. (根据汉语提示单词拼写)

7 . It’s said that history is written by the victors, and those victors set the standards for _____(admit) to the genius club. (所给词的适当形式填空)

8 . I dream of becoming a computer __ (operate) after graduating from college.

9 . What you say or do will have an e_________ on others.

10 . In order to do this you have to build up _________ (自信).