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问题 单项选择题

安全帽前部的帽舌尺寸为( )，其余部分的帽檐尺寸为( )。

A．10～45mm，10～25mm
B．10～55mm，10～35mm
C．10～45mm，10～35mm
D．10～55mm，10～25mm

答案

参考答案：B

阅读理解

This is Jim. He is thirteen. He is from the USA. He is a student. He has a good friend. His name is Jack. Jack is fifteen. He is from Canada. Jack is tall but Jim is short. They are in the same class, but they are in different grades. Jim is in Class Two. Jack is in Class Two, too. They go to school(上学) at seven in the morning and go home(回家) at six in the afternoon.

根据短文内容，选择正确答案。

小题1: Jim and Jack are ____.

A．sisters

B．friend

C．teacher and student

D．from different countries(国家)小题2:Jim is ____.

A．short

B．tall

C．strong

D．big小题3:Jim and Jack are in ____.

A．the same grade

B．different grades

C．the same color

D．the same family小题4:Jack is in ____.

A．Class 4

B．Class 3

C．Class 2

D．Class 1小题5:They go to school at ____ in the morning.

A．6:00

B．7:00

C．7:30

D．8:00
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填空题

不经过CPU，数据直接在I/O设备与存储器间传输的方法称为______。
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