一 看一看,读一读,将序号填入相应的括号内。
（）1. What is black when it is clean and is white when it is dirty?
（）2. What number comes next? 1,2,4,7,11,16,( ).
（）3. I can't walk. I can't fly. I can swim. What am I?
（）4. What letter is an insect?
（）5. Who works only one day in a year but never gets fired?
（）6. What can't talk but can speak the truth?
（）7. What number gets bigger when you turn it upside down?

1. F 2. C 3. D 4. B 5 A 6. E 7. G

()1.Don't ____ the window.
A. go
B. look
C. open

C

()2.—Are you a doctor?
—____.
A. Yes, I am
B. No, it isn't
C. Yes, it is

A

()3.I can see the cat ____ the tree.
A. in
B. with
C. on

A

()4.It's nine o'clock. You're late ____ the party.
A. to
B. for
C. in

B

()5.He is your mother's father. He's your ____.
A. father
B. grandfather
C. sister

B