下列设备组中，完全属于外部设备的一组是______。 A．激光打印机，移动硬盘，鼠标

This is Jim’s room. It’s a nice room. Some pictures are on the wall (墙). There’s a desk and a chair in his room. There is a sofa and a bookcase, too. The desk is between (在……之间) the bed and the bookcase. His backpack and pencil case are on the desk. His pencils, pen and ruler are in the pencil case. His sofa is near the desk. His baseball is under the bed.

小题1: There is ______ in Jim’s room.

A. a desk and a sofa           

B. a desk and some chairs

C. a chair and some desks

小题2:The desk is between the _______ and the _______.

A. sofa; bookcase            

B. bed; bookcase

C. bed; sofa

小题3:Jim’s pencil case is _______.

A. on the desk                

B. under the desk

C. under the bed

小题4: Jim’s _______ isn’t in his pencil case.

A. pencil       B. pen      C. eraser

小题5: Jim’s _______ is under the bed.

A. pen       B. baseball     C. ruler

设θ是第二象限角，则点P（sin（cosθ），cos（cosθ））在（　　）

A．第一象限

B．第二象限

C．第三象限

D．第四象限

关于下面教材中的四幅图的说法正确的是（     ）      

A．用力推墙，人会向后滑，说明物体间力的作用是相互的

B．踢出去的足球虽然会继续运动，但它总会停下来，说明物体的运动必须有力维持

C．箱子没有被推动是因为推力太小，小于箱子所受的摩擦力

D．利用锤柄与板凳的相互撞击使锤头套紧

呼吸的调节是由（）内的呼吸中枢负责的。

A.小脑

B.延脑

C.脑桥

D.延髓

用力法且采用图b所示的基本体系计算图a所示梁，△_1p为（）。

A.A

B.B

C.C

D.D