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【判断题】
信息隐藏是指每个模块的实现细节对于每个模块来说是隐藏起来的、不可见的。（ ）A.
正确
B.
错误
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【简答题】Why are the animals different colors?
【单选题】Why are the threats to fish more alarming than the threats to animals and birds?
A.
Because fish is a much needed food resource.
B.
Because plenty of fish is killed every year.
C.
Because fish is the only diet for many people.
D.
Because the sea fisheries are going to be exhausted.
【单选题】Why are many animals today facing dying out?
A.
Changes in the environment are new.
B.
They have not adapted to the changes.
C.
Human beings haven't protected them.
D.
The changes are happening too quickly.
【多选题】Why are the expressions of animals and their meat in English different?
A.
because it was the Saxon peasants who reared the animals
B.
because the Saxon churls cannot afford the meat
C.
because the ruling class did not allow the Saxon peasant to eat the meat
D.
because only the ruling class can afford the meat
【单选题】Listen to the dialogue about animals. Q: Why are animals extinct in the north of the city?
A.
Because forests are being cut down
B.
Because people are selling the animals
C.
Because the animals are leaving
D.
Because the animals are no longer needed
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