今年自考英语（二）复习资料：UNIT2

　　今年自考英语（二）复习资料：UNIT2

句子汉译英

黑洞是什么，天文学家还没有完全解决这个问题。

Astronomers have not yet fully solved the problem of what a black hole is.

据说黑洞可以将其周围的一切物体，如星星吞食掉。

It is said that black holes are able to swallow up all the objects around them, such as stars .

对黑洞的.研究刚刚开始，各种各样的假说层出不穷。

The research of black holes is just beginning and speculation about them are endless.

科学家仍不能说出黑洞内发生了什么。

Scientists still can not tell what happens inside a black hole.

It is still impossible for scientists to tell what happens inside a black hole.

如果我们认识了黑洞，黑洞就不那么可怕了。

If we understood black holes, they would not be so fearful .

Black holes will not be so fearful if we get to know them.

单元课后练习

Ⅰ Spelling

1.密度 n. density _ _ _ _ _ _ _ _

2.（使）倒塌，（使）崩溃 v. collapse _ _ _ _ _ _ _ _

3.边界线，边界 n. boundary _ _ _ _ _ _ _ _

4.永恒的，经久不变的 a.c _ _ _ _ _ _ _ _

5.基础，根据 n.b _ _ _ _ _ _ _ _

6.发射，发动 v.l _ _ _ _ _ _ _ _

7.双胞胎之一 a.t _ _ _ _ _ _ _ _

8.同伴，同事 n.c _ _ _ _ _ _ _ _

9.人类 n.m _ _ _ _ _ _ _ _

10.推测，猜测 n.s _ _ _ _ _ _ _ _

11.吞 v.s _ _ _ _ _ _ _ _

12.不充分的 a.i _ _ _ _ _ _ _ _

13.物质 n.m _ _ _ _ _ _ _ _

14.情况，环境 a.c _ _ _ _ _ _ _ _

15.发生，出现 v.o _ _ _ _ _ _ _ _

16.强烈的 a.i _ _ _ _ _ _ _ _

17.证据 n.e _ _ _ _ _ _ _ _

18.看不见的 a.i _ _ _ _ _ _ _ _

19.宇航员 n.a _ _ _ _ _ _ _ _

20.热带的 a.t _ _ _ _ _ _ _ _

Ⅱ Form

rnovae____(report) by astronomers in the seventeenth and eighteenth centuries.

ine the earth reduced to the size of a marble, but still____(have) the same mass, and you have some idea of the force of a black hole.

one____(make) a journey over the Continents one would find every kind of surface including mountain ranges, plains, and empty areas covered permanently by ice and snow.

astronomers are planning a new observatory to study the individual exploding stars____(believe) to be black holes.

er from the one which we can see____(pull) towards the companion star.