1 . If you _________ (混合)blue and yellow, you will get green.

2 . All of you, be quiet! I can't hear the g________(导游).

3 . Doing chores helps to d________ children's independence and teaches them how to look after themselves.

4 . —There are so many new words in this book.
—You can use a ________ to look up (查阅) new words.

A．ruler

B．dictionary

C．cup

D．tool

5 . The maths p________ is too difficult for me to work out, and I need some help.

6 . 一个篮球a元，一个排球b元，则买5个篮球和7个排球共需______________元．

7 . Thanks to the teacher’s help, I work out all the ________ (难题).

8 . 听下面一段对话，回答以下小题。
1. What color are the English tapes?

A．Blue.

B．Red.

C．Yellow.

2. Where are the English tapes?

A．In the bookcase.

B．On the model plane.

C．Under the model plane.

9 . 我的帽子是黑白相间的。
My ________ is ________ ________ ________.

10 . Don’t ________ (say) “no”.