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参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】COne day when some government officials were rebuilding a barn（谷仓），they found a mouse hole in a corner and used smoke to force the mice inside the hole to come out.A while later they indeed saw mice r...
A.
one was biting the other
B.
the mouth of the hole was too small
C.
they were not afraid of smoke
D.
one was trying to help the blind one
【单选题】In the early days of the old West in North America, life was difficult. People lived on farms far away from other families. And there were some big problems. For example, how did one family make a hou...
A.
To do more things.
B.
To turn big work into small work.
C.
To give people a chance to get together.
【单选题】In the early days of the old West in North America, life was difficult. People lived on farms far away from other families. And there were some big problems. For example, how did one family make a hou...
A.
[A] Because they didn’t work.
B.
Because life was too easy.
C.
Because people lived far away from each other.
【单选题】C In pioneer days, being a good neighbor was very important. Neighbors helped one another raise a house, build a barn(谷仓), and clear fields. Families depended on one another for friendsh...
A.
When the power failure hit New York City, people only minded their own business.
B.
Nobody needs all the machines we have made till now.
C.
People used to pay each other with their building, raising, and so on.
D.
People have difficulties in finding a good neighbor today.
【单选题】In the early days of the old West in North America, life was difficult. People lived on farms far away from other families. And there were some big problems. For example, how did one family make a hou...
A.
[A] Cooperation is not funny.
B.
Today there is still much cooperation.
C.
Some people today even don’t know who their neighbors are.
【单选题】In the early days of the old West in North America, life was difficult. People lived on farms far away from other families. And there were some big problems. For example, how did one family make a hou...
A.
[A] They helped their parents.
B.
They stayed at their own houses.
C.
They played together.
【单选题】In the early days of the old West in North America, life was difficult. People lived on farms far away from other families. And there were some big problems. For example, how did one family make a hou...
A.
They helped their parents.
B.
They stayed at their own houses.
C.
They played together.