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【多选题】
1900年,的遗传理论被三位不同国家的植物学家重新发现,他们分别是:A.
de Vries
B.
Correns
C.
Bateson
D.
Tschermark
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皮皮学刷刷变学霸
举一反三
【单选题】听力原文：The bicycle rider was refused help by several passing motorists on the side of a highway. Which of the following is true according to the speaker?
A.
The bicycle rider didn't stop to help the motorists.
B.
The bicycle rider passed by several motorists.
C.
Some drivers didn't stop to assist the bicycle rider.
【简答题】蓄电池电解液是由（）与（）按一定比例配制而成的。
【简答题】蓄电池电解液是由 与 按一定比例配制而成。