小明将两个小灯泡L1(6V 3W)、L2(6V 1.8W)串联接入电路，测得通过_爱下问搜题

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问题选择题

小明将两个小灯泡L₁(6V 3W)、L₂(6V 1.8W)串联接入电路，测得通过L₂的电流是0.3A，则通过L₁的电流是

A．0.2A

B．0.3A

C．0.5A

D．0.8A

答案

答案：B

串联电路电流处处相等，因为通过L₂的电流是0.3A，所以通过L₁的电流也是0.3A，选B

完形填空

完形填空。

Mike:    1   are you going to do this afternoon?
Zhang: I'm    2   to visit my grandparents.
Mike:     3   do you get there?
Zhang: I get there    4   subway.
Mike: Where   5   they live?
Zhang: Their home is next to the Science Bookstore. I turn left   6   the traffic lights
           in front of the subway station, then go straight.   7   home is   8   the left.
Mike: I'm going to the Science Bookstore afternoon! I want   9   buy a new book.
Zhang:  10  go together after lunch.

( )1. A. When
( )2. A. going
( )3. A. What
( )4. A. on
( )5. A. are
( )6. A. in
( )7. A. They
( )8. A. in
( )9. A. to
( )10. A. Let

B. What
B. go
B. When
B. in
B. is
B. on
B. Their
B. on
B. and
B. Let's

C. Do
C. will
C. How
C. by
C. do
C. at
C. His
C. at
C. or
C. I

D. Where
D. shall
D. Where
D. at
D. can
D. to
D. Her
D. of
D. but
D. You

填空题

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