阅读理解选择正确答案。

      This is a picture of my friends. They are in my bedroom. There's a book in two girls' hands. They are

reading. The girl with long hair is Lucy. She's from Australia. The girl behind her is Alice. She's her sister. The

boy under the table is their little brother. He's playing with toy cars. He doesn't go to school. The front girl is in

Grade Six and the other is in Grade Five. They are very happy.

1. How many children?  ____________.[ ]

A. Two

B. Three

C. Five

2. ____________ children are reading! [ ]

A. One of

B. Two of the

C. All the

3. Lucy is ____________ Alice.[ ]

A. behind

B. in front of

C. under

4. Lucy is in Grade ____________.[ ]

A. 5

B. 6

C. 4

依据《烟花爆竹安全管理条例》的规定，生产烟花爆竹使用的原料，应当符合( )的规定。

A．行业标准
B．企业标准
C．地方标准
D．国家标准