问题 选择题

下列关于电场及电场强度的说法中,正确的是      

A.电场实际上并不存在,是人们想象中的一种东西

B.电荷之间的相互作用,是通过电场来发生的

C.电场强度是描述电场性质的物理量,它与试探电荷所受的电场力有关

D.电场强度的方向就是电荷在电场中所受电场力的方向

答案

答案:B

单项选择题
阅读理解

B

Have you ever considered all the English expressions that include words about clothes? Let’s have a look.

People wear pants to cover the lower part of their bodies.We sometimes say that people who are nervous have ants in their pants.Sometimes,people may get caught with their pants down.They are found doing something they should not be doing.And,in every family,one person takes contro1.Sometimes a wife tells her husband what to do.Then we say she wears the pants in the family.

Pants usually have pockets to hold things.Money that is likely to be spent quickly can bum a hole in your pocket.Sometimes you need a belt to hold up your pants.If you have less money than usual,you may have to tighten your belt.

I always praise people who can save their money and not spend too much. l really take my hat off to them. Yet, when it comes to my own money, I spend it at the drop of a hat, which means I immediately spend it.

Boots are a heavy or strong kind of shoes. People who are too big for their boots think they are more important than they really are. I dislike such people.

My father is an important person. He runs a big company. He wears a suit and tie, and a shirt with sleeves that cover his arms. Some people who do not know him will think he is too serious and never shows his feelings openly. But I know that my father wears his heart on his sleeve.                                                                                                                               

小题1:What is this passage mainly about?  

A.What pants mean in English.

B.Some special English expressions.

C.Some funny English expressions.

D.Some expressions related to clothes.小题2:Which of the following expressions can show someone is nervous?

A.Get caught with one's pants down.

B.Have ants in one's pants.

C.Wear the pants in the family.

D.Bum a hole in one's pocket.小题3: If we say someone has to tighten his belt, we probably mean he        

A.has done something wrong

B.used to live a rich life

C.has put on the wrong pants

D.doesn’t have enough money小题4:Someone who spends his money at the drop of a hat most probably_           

A.doesn’t save money

B.earns much money

C.never wastes his money

D.spends more than he earns