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【单选题】
三角形平面的三个投影均为缩小的类似性,该平面为( )A.
水平面
B.
正平面
C.
侧平面
D.
一般位置平面
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【简答题】“Hello,everybody.Nice to meet you.”My name is ‘earth’. I am 4 billion 5 hundred million years old now. “But recently, I am seriously .”“ Because people in the earth don’t me like before.” “people cut ...
【单选题】Read the following paragraph from section “Thinking Ahead." There are also rules to keep Antarctica the way it is. Nothing can be taken home as a souvenir. Everyone has to get rid of their trash. Peop...
A.
Scientists cannot take anything from Antarctica home with them.
B.
It is important for scientists to throw away all of their trash.
C.
Antarctica has many animals that scientists must stay away from.
D.
There are several rules scientists must follow in Antarctica.
【简答题】小猪唏哩呼噜为了把鸭太太的鸭蛋运到城里去,他向( )借箩筐, 向( )借扁担。
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