阅读理解。
I'm taking my family to other countries to have a trip. My wife, I and our two children are all
going along. My elder brother has decided to go with us. He has never been overseas (出国) and
he is even more excited than the children. My father is so old that he'd like to stay at home and
take care of the house.
We're going to go by train to New York, and then take a ship to Europe (欧洲). When we arrive
in Europe, we're going to several countries for sightseeing. We'll go to places either by train
or by bus. We're going to fly home.
It took us a long time to decide where to go, but I think we have planned a very interesting
trip. We will go to England, France and Italy. My wife is very interested in France because she is
a teacher of French. And my brother, who speaks very good Italian (意大利语), is looking forward
(期望) to the trip to Italy.
We also talked about how we would go to Europe. At first we wanted to fly because it would
be faster and would save more time. But my brother likes to take a boat trip and the children enjoy
that, too.
1. My brother is very excited because______.
A. he has many friends in other countries
B. he has never travelled by plane
C. he wants to buy some books in Italy
D. he has never been overseas
2. We're coming back home by______.
A. sea
B. air
C. bus
D. train
3. In Europe, we will ______
A. go sightseeing at the seaside(海边)
B. go to different countries by ship
C. buy a lot of presents
D. go from place to place by train or by bus
4. My wife works in a______.
A. hospital
B. factory
C. shop
D. school
5. My brother and my children would like to______.
A. do some shopping in Europe
B. study the Italian language in Italy
C. enjoy a trip by ship
D. learn French in France
，速度增大，则N减小（减为零之后由反向增大）
，
，则摩擦力先减小后增大，直到摩擦力等于重力之后平衡速度不再发生改变则压力也不变了，选D
