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【单选题】
0806-导入试卷-单选243
A.
243
B.
244
C.
245
D.
246
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参考答案:
举一反三
【多选题】黄酮苷类化合物常用的提取方法有
A.
碱提取酸沉淀法
B.
乙醇提取法
C.
水蒸气蒸馏法
D.
沸水提取法
E.
酸提取碱沉淀法
【单选题】In the last paragraph, the author tries to justify his conclusion by
A.
reducing to absurdity.
B.
making an comparison.
C.
giving an example.
D.
explaining a phenomenon.
【单选题】In the third paragraph, the author tries to demonstrate that our siblings
A.
offer us much useful information.
B.
have great influences on us.
C.
are the ones who love us completely.
D.
accompany us throughout our life.
【单选题】What conclusion can we draw from the passage?
A.
The author tries to tell the readers how important the language is.
B.
The author intends to explain the significance of culture in global communication.
C.
The author thinks his mistake is only an awkwardness in his everyday life.
D.
The author wants to illustrate what the sentence 'Don't use thanks' means.
【多选题】有关于热对流的说法正确的是( )。
A.
流体有宏观的运动
B.
内部存在温差
C.
可分为自然对流和强制对流
D.
自然界存在单一的热对流
【单选题】The author tries to convince us that
A.
college education paves the way for future success.
B.
higher education faces an unforeseeable future.
C.
a college diploma is the necessary credential for better jobs.
D.
the purely economic reason for college is not as compelling as it once was.
【单选题】下列关于涡流的说法正确的是
A.
涡流是感应电流,也是因为穿过导体的磁通量变化而产生的
B.
涡流不是感应电流,而是一种有利于感应电流的特殊电流
C.
涡流有热效应,但没有磁效应
D.
在硅钢中不会产生涡流
【简答题】By asking these fundamental questions, the author tries to persuade us to change our view on ________.
【单选题】In the book, the author tries to explain that
A.
money is useless to us.
B.
money is the aim of life.
C.
money should be an instrument.
D.
money is everything.
【多选题】黄酮苷类化合物常用的提取方法有
A.
碱溶解酸沉淀法
B.
乙醇提取法
C.
水蒸气蒸馏法
D.
沸水提取法
E.
酸提取碱沉淀法
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