阅读理解。
ㅤThere is some fish and two apples on the table.Five rats（老鼠）see them.They are very hungry.They want to go up to eat the food.But the table is tall.
ㅤ"There are some boxes in the room."says one rat."We can use them."
ㅤSo the first rat pushes（推）one box.The second rat pushes two.The third rat pushes three.They make a staircase.But they can't get the food yet.（仍然）
ㅤSo the fourth rat pushes（1）

four

four

boxes.The（2）

fifth

fifth

rat pushes five.They make a very tall staircase.Oh no!Now the staircase is falling down!
（一）请写出文章中空白处的词语。
（二）选择填空。
（3）文中的划线单词staircase指的是

B

B

.
A.滑梯
B.楼梯
C.电梯
（4）We can use them.这里的 them指的是

C

C

.
A.food
B.rats
C.boxes
（5）Why can't the rats get the food？

A

A

A.Because they're on a tall table.
B.Because there is a cat.
C.Because they can't push the boxes.
（三）回答问题。
（6）Do the rats eat the food？

No，they don't.

No，they don't.

（7）How many boxes do they push？

They push fifteen boxes.

They push fifteen boxes.