阅读理解。

     This is the twins' bedroom. It is a nice room. The two beds look the same. This bed is Lily's and that one

is Lucy's. The twins have two chairs and one desk. Their clock, books and pencil cases are on the desk.

Their backpacks are behind the chairs. Some nice flowers (花) are on the desk. Some pictures are on the wall.

Is there a baseball? Yes, it's under Lily's bed. The bedroom is very nice.

1. The twins are ______.

A. at home

B. have a nice room

C. in different room

D. in the same room

2. We can see ______ in the room.

A. one bed

B. two beds

C. Lucy's bed

D. Lily's bed

3. The clock is ______.

A. behind the door

B. behind the chair

C. on the desk

D. on the wall

4. Some ______ are on the desk.

A. pictures

B. flowers

C. chairs

D. clocks

5. We can find ______ under Lily's bed.

A. a backpack

B. some flowers

C. a basketball

D. a baseball

骨盆环由下列哪些结构构成（）

A.髂骨与骶尾骨

B.耻坐骨与骶尾骨

C.髋骨与骶尾骨

D.髋骨与尾骨

E.耻、坐骨与骶骨