如图所示,在O和O/两点放置两个等量正点电荷,在OO/连线上有A、B、C三个点,

题型:选择题

问题:

如图所示,在O和O/两点放置两个等量正点电荷,在OO/连线上有A、B、C三个点,且OA=BO/=O/C。一正点电荷沿路径Ⅰ从B运动到C,电场力所做的功为W1;沿路径Ⅱ从B运动到C电场力所做的功为W2。把该正点电荷从A沿OO′连线运动到C,电场力所做的功为W3,则下列说法正确的是

A.W1大于W2         B.W1为正值         C.W1大于W3         D.W1等于W3

考点:电势
题型:选择题

ENJOY YOUR FAVORITES IN STAR CINEMA

June

Fri-Sun

The amazing spider-man 2  14:00;   16:00

x-men: days of future past   14:00;  16:00

20:00;    22:00

Mon-Thurs

The good dinosaur      12:00;  14:00;   16:00;   20:00

July

Fri-Sun

How to train your dragon 2    14:00;   16:00

Transformers 4              14:00;   16:00

20:00;   22:00

Mon-Thurs

The amazing spider-man 2    12:00;   14:00;   16:00

Tickets must be booked Any time up to 30 minutes, before the film starts, ticket holders are given seat numbers,

Drinks are provided. Food may be bought from the shop and eaten in the area provided outside the cinema,

Ticket prices: Adults,$18,  Children under6. :$6; Students under 16, $10

Smoking is not allowed anywhere in the cinema, Mobile phones must be kept off,

小题1:What film can John see if he wants to see a film on a Saturday night in July?

A.The Amazing Spider-man 2.

B.X-men: days of future past.

C.How to train your dragon 2.

D.Transformers 4.小题2:When can you see the film the Amazing spider-man 2?

A.Tuesday, July 10 p.m.

B.Tuesday, July, 4 p.m,

C.Friday, June, 4 a.m.

D.Friday, June, 8 p.m.小题3:How much will it cost for a family with two children, (one is 5 and the other is 8)to see a film?

A.$46

B.$36

C.$52

D.$48小题4:When can people book tickets?

A.The day before the film.

B.Any time before the film.

C.An hour before the film.

D.No later than half an hour before the film.小题5:What can you do,anywhere in the cinema?

A.Eat some food.

B.Have some drinks.

C.Make a phone call.

D.Smoke in the area provided.

题型:选择题

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A.气胸、血胸

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A.穿心莲

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C.白鲜皮

D.熊胆

E.马齿苋

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