二：将括号内的词变为适当形式。

　　1. The satellite ______ in a rocket. (launch)

　　2. The roof _____ under the weight of the snow. (collapse)

　　3. We should avoid _____ what we think about people different from ourselves. (decide)

　　4. The most _____ evidence of black holes comes from research into binary stars system. (convince)

　　5. There is a great deal of ____ about his retirement from active politics. (speculate)

　　Answers: was launched, collapsed, deciding, convincing, speculation

　　三：汉译英

　　1黑洞有很强的引力，但它没有物质。

　　2.如果我们认识了黑洞，它就不那么可怕了。

　　3.由于管理不善，他的公司垮台了。

　　4.他的身影消失在黑暗中了。

　　5.药物开始见效了吗?

　　Answers:

　　1. A black hole exerts a strong gravitational pull and yet it has no matter。

　　2. If we understood black holes, they wouldn't be so dreadful to us。

　　3. His company collapsed as a result of poor management。

　　4. His figure was swallowed up in the dark。

　　5. Has the medicine started to operate?

　　一：选词填空

　　sensitive, elderly, vulnerable, deteriorate, request, debate, be affected with, take sth into account。

　　1. Relation between the two countries began to ____ in 1988.

　　2. The interview was put off at my ______。

　　3. The girl ________ high fever。

　　4. You must ______ his ignorance when making a decision。

　　5. We need to be more ______ to the needs of students. sensitive

　　Answers: deteriorate, request, is affected with, take sth into account;