6. Fll tell you the truth,        you don't let it out to anyone.

   A. since   B. once

   C. provided   D. unless

5.        men believe in luck. Selftrust is the first secret of success.

   A. Proud   B. Plain

   C. Shallow   D. Humble

4. One after another rose to speak and        all his arguments to pieces.

   A. tore   B. took

   C. cut   D. pulled

3. Difficulties and failures did not        down his enthusiasm.

   A. get   B. bring

   C. damp   D. let

2. We choose our friends by         ，but we keep them by judgment.

   A. instinct   B. origin

   C. nature   D. character

1. The situation was out of control and finally turned into         .

   A. twist   B. confusion

   C. trap   D. trend

10. There is no doubt that this is the third time that        Wuhan (come)

毫无疑问，这是他第三次来武汉。

9. With        his lecture about the endangered animals,the professor has been preparing for it all the day. (attend)

因为许多学生要来听关于濒危动物的报告，这位教授一整天都在做准备。

8. The contract will        on October 1 ,2013. (effect)

这份合同将于2013年十月一日生效。

7. In some parts of Britain,          ，by the age of thirty,has no teeth left. (person)

十分之一的英国人到了三十岁牙齿就全掉光了。