请在图所示电路的适当位置，标出表示电压表和电流表的符号．
由图可知，b表并联在电源两端，a表与灯泡串联，所以b为电压表；a为电流表；如图所示：
阅读理解。选择正确的答案。
Hello! I'm Li Ming. Look at my room. There is a desk and a chair in it. A bed is near the door. A cat
is under the desk. On the wall, there is a beautiful picture. On the floor, there is a ball. My room is small,
but (但是) it's very nice! I like my room.
1. Is this Li Ming's room?
A. Yes, she is.
B. No, she isn't.
C. Yes, it is.
2. Where is the bed?
A. Near the window.
B. Near the door.
C. Near the chair.
3. Where is the cat?
A. On the desk.
B. Under the desk.
C. In the desk.
4. What's on the wall?
A. A beautiful picture.
B. A fan.
C. On the bed.
5. Where is the ball?
B. On the floor.
Java的类库具有 ______ 的特点，保证了软件的可移植性。
