The water level of the river has increas

You have _____ play sports.[ ]

A. to            

B. in            

C. at

在图所示的电路中，要用电流表测出通过灯L的电流，应将线头M接在

A．“-”接线柱  

B．“0.6”接线柱上   

C．“3”接线柱上、   

D．灯L 右端的接线柱处

What does the passage mainly discuss

A．( The role of instinct in animal behavior

B．( Observations that suggest consciousness in an anima behavior

C．( The use of food in studies of animal behavior

D．( Differences between the behavior of animals in their natural environments and in laboratory experiment

国内特快邮件短少缮写验单后，下列不能作为随验单附寄的相关证物的是（）。

A.相关内件短少邮件

B.封志

C.绳扣

D.清单复印件

网球运动有哪些特点（）

A、比赛时间长

B、跑动量大

C、击球次数多

D、心理品质要求高