18.declare vt.宣告；宣布

19.souvenir n.纪念品

20.settler n.移民；殖民者

settle v.定居；解决

Ⅱ.重点短语

1.the number of ......的数量

2.drop off下降；减少

3.as a result of由于......；作为......的结果

4.in case以防；万一

5.set up建立，设立；设置；创办

6.due to由于

7.rather than而不是

8.in conclusion总之

9.lead to导致，致使；通向；通往

Ⅲ.重点句式

1.with复合结构

This marked the beginning of the "space race" between the US and the USSR，which ended with the US putting(put) a man on the moon in 1969.

这标志着美国和前苏联之间"太空竞赛"的开始，这场竞赛最终以美国于1969年把人送上月球而告终。

2.so that引导目的状语从句

It was launched in 1990 so that astronomers could observe space without the Earth's atmosphere being a barrier.它于1990年被送入太空，以便天文学家观测太空时能不受地球大气层的阻碍。

3.as long as 引导条件状语从句

...as long as people remain interested，we will keep exploring the world overhead.

......只要人们仍心存兴趣，我们将会继续探索头顶上的世界。

Ⅰ.根据P26课文内容判断正(T)误(F)

1.The moon is the only frontier left to explore for man.(F)

2.The invention of Hubble Telescope contributes to exploring space further.(T)

3.The successful launch of Shenzhou Ⅴ makes a great difference to China's manned space programme.(T)

4.A permanent base has been set up on the moon.(F)