在如图（a）所示电路中，当闭合开关后，两个电压表指针偏转均为

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问题选择题

在如图（a）所示电路中，当闭合开关后，两个电压表指针偏转均为图6－3（b）所示，则电阻R₁和R₂两端的电压分别为（　）

A．4.8V， 1.2V

B．6V， 1.2V

C．1.2V 6V

D．1.2V， 4.8V

答案

答案：A

两个电压表的量程不同，V1是选大量程，V2是选小量程。电阻R₁和R₂两端的电压分别为4.8V，1.2V。A是正确的。

阅读理解

Read the passage and tell true (T) or false (F). 阅读短文，判断正误。

My name is Bob and I live with my parents in Shanghai, China now. I study in a primary school with

foreign children. My parents teach English in a middle school. We are very busy from Mondays to Fridays.

We live in a new house with three rooms. It is beside my parents'school, but it is far from my school. I

usually go to school by school bus.

Today is Sunday. We are all at home today. My father is sitting on a chair near the window. He is reading

a book. My mother is in the kitchen. She is cooking for us. I am in my room. I am at the table. I am doing my

homework.

( ) 1. There are five people in Bob's family.

( ) 2. His parents teach English in a middle school.

( ) 3. Their house is near Bob's school.

( ) 4. His mother is in the kitchen.

( ) 5. Bob usually goes to school by car.

多选题

如右图，水平面上有一半径为R的圆形区域处在场强为E的匀强电场中，电场方向与圆面平行，一质量为m、带电量为q的带电粒子由圆上某一点，以与圆面平行的初速度v₀进入该圆形区域，当该粒子运动到该圆形区域的圆心处时，可能具有的动能为（　　）

A．

B．

C．

D．0