2 . 翻译短语
1. 一滴水__________________________________
2. 没有水__________________________________
3. 达几个小时__________________________________
4. 需要更少的水__________________________________
5. 三分之二__________________________________
6. 在地球上__________________________________
7. 没有盐__________________________________
8. 跑进河里__________________________________

5 . 用方框中所给短语的适当形式填空。

millions of;   take photos;   far away; on the earth;   be called

1. An angle of 90 degrees ________ a right angle.
2. There is air and water ________.
3. You are not allowed ________ in the museum.
4. We all know that ________ birds fly to Dongting Lake in winter.
5. Mars is ________ from Earth.

8 . 英汉互译。
1. sell out ________
2. get dressed ________
3. 熬夜 ________
4. 不再 ________
5. 减肥 ________
6. 各种各样 ________
7. hundreds of ________
8. on the earth________

10 . 用articles冠词 (a, an, the)、prepositions介词 (in, on, at 等)或 conjunctions连词 (and, but, because, so等) 填空。
1. There are also many people like you and me ________ the Earth.
2. Burning things may pollute ________ air.
3. It is really nice to fly kites ________ this time of year.
4. Autumn is my favourite season ________ I find the weather comfortable.
5. I asked everybody, ________ only two people came.