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【单选题】
为了保证列车的安全，保证列车的牵引力可以顺利通过坡道，铁路修理规则规定，一般情况下，Ⅰ级铁路区间线路最大限制坡度值为（ ）A.
20%
B.
6%
C.
12%
D.
15%
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【简答题】Why do the more and more student have to turn to private student loans?
【单选题】Why do older students change their friendships?
A.
They don’t like to be friends of the same race.
B.
They prefer to make friends with similar people.
C.
They become confused with their own identity.
D.
They want to be trusted and respected by friends.
【简答题】仔细阅读：Why do some people live to be older than others? You know the standard explanations: keepingPassage Two（2016年6月大学英语四级卷1真题及答案） Questions 51 to 55 are based on the following passage. Why do some pe...
【单选题】Why do older students change their friendships?
A.
They don’t like to be friends of the same race.
B.
They prefer to make friends with similar people.
C.
They become confused with their own identity.
D.
They want to be trusted and respected by friends.
【单选题】Why do older people need to understand the ideas of young people according to the passage?
A.
They are older than young people.
B.
The young people will soon be in charge of the nation.
C.
The students today have strong opinions.
D.
The youth’s ideas are sometimes wrong.
【单选题】Why do people in England prefer older houses to the new ones?
A.
Older houses are cheaper.
B.
New houses are difficult to buy.
C.
Older houses are more characteristic.
D.
They have some of the luxuries in modern life.
【单选题】Why do older students change their friendships?
A.
They don’t like to be friends of the same race.
B.
They become confused with their own identity.
C.
They prefer to make friends with similar people.
D.
They want to be trusted and respected by friends.
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