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【判断题】
参照群体指那些作为人们判断事物的标准或仿效模仿的群体A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】请在第____处填上正确答案。
A.
There have been many attempts to redesign the periodic table since Dmitri Mendeleev drew it up in 1871．
B.
Railsback has still ordered the elements according to the number of protons they have．
C.
“I imagine this would be good for undergraduates．”
D.
Railsback has listed some elements more than once．
E.
And the size of element’s symbol reflects how much of it is found in the Earth’s crust．
F.
The traditional periodic table was well drawn．
【单选题】---How was your driving test going? ---Not very well at first, but after many attempts I ____ passed it.
A.
merely
B.
occasionally
C.
absolutely
D.
eventually
【单选题】(2009安徽合肥质检)Having failed in many attempts，the bird managed to escape from the cage．
A.
suddenly
B.
naturally
C.
immediately
D.
eventually
【简答题】新设计井钻遇目的层顶界面的深度在1500m,目的层厚20m,该井的设计深度应大于 m。
【单选题】Many attempts ______ to climb that mountain before he succeeded in doing it.
A.
have made
B.
had been made
C.
had made
D.
have been made
【简答题】Having failed in many attempts,the bird _____managed to escape from the cage. A．suddenly B．naturally C．immediately D．ually
【单选题】根据材料回答{TSE}题：
A.
There have been many attempts to redesign the periodic table since Dmitri Mendeleev drew it up in 1871.
B.
Railsback has still ordered the elements according to the number of protons they have.
C.
I imagine this would be good for undergraduates.
D.
Railsback has listed some elements more than once.
E.
And the size of element's symbol reflects how much of it is found in the Earth's crust.
F.
The traditional periodic table was well drawn. {TS}__________
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