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【判断题】
在苯环的亲电取代反应中,-NO 2 、-COR、-COOH具有-I和-C的作用,因此是间位致。A.
正确
B.
错误
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举一反三
【简答题】Kate Green is a girl. She is my good friend (朋友). She is English. Kate is her first name.Green is her family name. Mr Green is her father(爸爸)。His first name is John. Mrs Green is her mother (妈妈). Her ...
【单选题】—What's her name? — ____. [ ]
A.
She is a girl
B.
She is OK
C.
Her name is Kate Green
D.
She is Green
【简答题】离子通道的特点?
【多选题】关于离子通道的特点描述正确的是?
A.
离子通道具有门控性和选择性
B.
离子通道的选择性与通道直径和电荷有关
C.
离子通道内部为亲水性微孔
D.
离子通道外部为亲脂性残基
【简答题】阅读理解。 This is a picture of Kate Green's family. In the picture we can see her grandparents, her parents, her brother Mike and her. Her grandparents are on the chair. Mr. Green and Mrs. Green are behin...
【单选题】Mrs. Green is Kate's mother. Kate is her ______. [ ]
A.
daughter
B.
mother
C.
father
D.
son
【简答题】阅读理解。 Mrs. Green is going to give a birthday party for Kate. Kate is her daughter. Kate will be four years old. A lot of Kate's friends will come to the party. Mrs. Green will go shopping. She wil...
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