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【单选题】
下列关于氨基酸分类的叙述中错误的是A.
在20种氨基酸中，大多数氨基酸都有极性
B.
在20种氨基酸中，大多数氨基酸都是非极性氨基酸
C.
在20种氨基酸中，生理pH 值条件下多数氨基酸都是不带电荷的
D.
在20种氨基酸中，8种氨基酸属于非极性氨基酸
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举一反三
【单选题】According to the passage, who supports the author and shares his adventures?
A.
His family.
B.
His teacher.
C.
His friends.
D.
His fellow workers.
【多选题】生态学是 ( )
A.
研究植物、动物与环境之间相互关系的科学
B.
研究植物、动物相对于自然与生物环境关系的科学
C.
研究生物与生存环境相互关系的科学
D.
研究生物与非生物环境之间的相互关系的科学
E.
研究植物与生存环境相互关系的科学
【单选题】Am I to understand that his new post____no responsibility with it at all?
A.
keeps
B.
supports
C.
carries
D.
possesses
【单选题】A) He had apositive attitude towards life. B) Hewanted to write and that his dream. C) He wassure his dream would come true. D) He gotmany supports from his friends.
A.
He had apositive attitude towards life.
B.
He wanted to write and that his dream.
C.
He was sure his dream would come true.
D.
He got many supports from his friends.
【单选题】Listen to Track 73.
A.
He fully supports the student's statement.
B.
His experience this morning was unexpected.
C.
He was not affected by what happened this morning.
D.
The student should not complain.
【多选题】生态学是( )。
A.
研究植物、动物与环境之间相互关系的科学
B.
研究植物、动物相对于自然与生物环境关系的科学
C.
研究生物与生存环境相互关系的科学
D.
研究生物与非生物环境之间的相互关系的科学
【多选题】生态学的定义是( )。
A.
研究植物、动物与环境之间相互关系的科学
B.
研究植物、动物相对于自然与生物环境关系的科学
C.
研究生物与生存环境相互关系的科学
D.
研究生物与非生物环境之间的相互关系的科学
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