一．选出下列各组单词中画线部分读音不同的一项。

1.A.waste         B.save         C.same         D.around

2.A.drive         B.drink         C.litter         D.slip

3.A.ago          B.project        C.smoke        D.poster

4.A.sign          B.plastic        C.bin          D.pick

5.A.cool          B.school        C.cook         D.afternoon

二、英汉互译。

1.在许多地方                        2.浪费纸

3.一些有用的瓶子                    4.在地球上

5.太多石油                          6.most of us

7.protect the environment               8.make tables

9.reuse the water                      10.do a project

三、用所给单词的适当形式填空。

1.We should keep the water _______ (clean).

2.Let's _______ (draw)some pictures.

3.The students start _______ (read)the new word.

4._______(much)of our energy comes from oil and coal.

5.We can use a lot of _______ (energy).

6.Wood is very _______ (use).

7.I usually use the computer _______ (write)emails.

8.Last week,a young man _______(cut)down a big tree.

9._______ (not) waste water!

10.There is too much _______ (rain)in summer.