27．(be) strict with...对......严格的

28．make sense讲得通；有意义

29．make a contribution/contributions to对......作出贡献

30．be cautious about/of对......谨慎

31．in a sense在某种意义上；在某种程度上

32．with caution小心翼翼地

33．put off推迟，延期

34．conclude...from...从......中推断出......

35．blame sb.for sth.因某事责备某人；把某事归咎于某人

Ⅳ.完成句子(共5小题；每题6分，满分30分)

36．Only if you put the sun there did the movements of the other planets in the sky make sense.

只有当你把太阳放在那里，天空中其他行星的运动才能说得清楚。

37．So between 1510 and 1514 he worked on it，gradually improving his theory until he felt it was complete.

于是，他在1510年至1514年期间从事这项研究，逐步改进他的理论，直到他感到完善时为止。

38．The changes he made to the old theory were revolutionary.

他对旧理论所做的改动是革命性的。

39．He placed a fixed sun at the centre of the solar system with the planets going round it and only the moon still going round the earth.

他把太阳固定在太阳系的中心位置上，而行星则围绕着太阳转，只有月球仍然绕着地球转。

40．Yet Copernicus' theory is now the basis on which all our ideas of the universe are built.

然而现在哥白尼的理论却是我们的宇宙观建立的基础。

Ⅰ.Read the passage and match the main idea of each paragraph.

Para.1　A．New observations didn't agree with the old theory about the earth.

Para.2 B．Copernicus' theory is the basis of modern science about the universe.

Para.3 C．Copernicus was puzzled as he found the earth was not the centre of the solar system.

Para.4 D．Copernicus' new theory that the sun was the centre could explain all the phenomena.

Para.5 E．Copernicus improved his theory by collecting observations and using his mathematical knowledge.

答案　Para.1　C　Para.2　A　Para.3　E　Para.4　D　Para.5　B

Ⅱ.Read the passage carefully and choose the best answers.