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用水作为提取溶剂，时间最短、操作最简单的提取方法是（ 第 108 题 用水作为提取溶剂，时间最短、操作最简单的提取方法是（　　）
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参考答案：
举一反三
【多选题】Which of the following are correct about words/language according to Taoism?
A.
words are constant, pointing at specific meanings.
B.
words may not mean what they are supposed to mean.
C.
words are not always reliable.
D.
words are handy means to denote things, but when you get the things, you may forget about the words.
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【单选题】It was all your own fault, so you can’t avoid ____ for it.
A.
to be punished
B.
to punish
C.
being punished
D.
punishing
查看完整题目与答案
【单选题】-Did you punish him for losing your digital camera? -Yes, but I don't  think I ________. [     ]
A.
should do that
B.
need to have done so
C.
ought have done that
D.
should have done so
查看完整题目与答案
【简答题】Part A You are to write a composition of about 150 words about Family Life in China. In the composition you should write about: 1) difference between family life in China and family life abroad; 2) pr...
查看完整题目与答案
【单选题】听力原文：W: Good morning, can I help you? M: Yes, I'd like to know something about the weather in New York this week. W: Well, it's fairly hot and there's much rain in the evenings. M: I see, thanks very ...
A.
Windy.
B.
Very hot.
C.
A bit cold.
查看完整题目与答案
【简答题】About three hundred words in the English language come from the names of people. Many of these words are technical words. When there is a new invention of discovery, a new word may be coined(杜撰) after...
查看完整题目与答案
【单选题】一个物体所受重力的大小,在下列情况下会改变的是( )
A.
把它从赤道移到北极
B.
在同一地点,把它放到水中
C.
在同一地点,把它放到密闭的容器里
D.
在同一地点,让它由静止变为运动
查看完整题目与答案
【单选题】听力原文：W：Your dog certainly seems to know you are his master．Did you have to punish him very often when you train him? M：I found it's much better to praise him when he obeys and not to be so fussy when ...
A.
He has learned a lot from his own mistakes.
B.
He is quite experienced in training wild dogs.
C.
He finds reward more effective than punishment.
D.
He thinks it vital to master basic training skills.
查看完整题目与答案
【简答题】用所给单词的适当形式填空。 1. If you do wrong, you will have the____(punish) that you deserve one day. 2. The _____ (conduct) told the school boys not to throw litter onthe floor of the bus. 3. There is a____(dist...
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【单选题】禽流感病毒常在春秋季节肆虐。下列关于禽流感病毒的叙述,错误的是
A.
细胞微小，结构简单
B.
只能寄生在活的细胞里
C.
能使人、禽得病
D.
能够利用春秋季节来防治禽流感
查看完整题目与答案
相关题目：
【多选题】Which of the following are correct about words/language according to Taoism?
A.
words are constant, pointing at specific meanings.
B.
words may not mean what they are supposed to mean.
C.
words are not always reliable.
D.
words are handy means to denote things, but when you get the things, you may forget about the words.
查看完整题目与答案
【单选题】It was all your own fault, so you can’t avoid ____ for it.
A.
to be punished
B.
to punish
C.
being punished
D.
punishing
查看完整题目与答案
【单选题】-Did you punish him for losing your digital camera? -Yes, but I don't  think I ________. [     ]
A.
should do that
B.
need to have done so
C.
ought have done that
D.
should have done so
查看完整题目与答案
【简答题】Part A You are to write a composition of about 150 words about Family Life in China. In the composition you should write about: 1) difference between family life in China and family life abroad; 2) pr...
查看完整题目与答案
【单选题】听力原文：W: Good morning, can I help you? M: Yes, I'd like to know something about the weather in New York this week. W: Well, it's fairly hot and there's much rain in the evenings. M: I see, thanks very ...
A.
Windy.
B.
Very hot.
C.
A bit cold.
查看完整题目与答案
【简答题】About three hundred words in the English language come from the names of people. Many of these words are technical words. When there is a new invention of discovery, a new word may be coined(杜撰) after...
查看完整题目与答案
【单选题】一个物体所受重力的大小,在下列情况下会改变的是( )
A.
把它从赤道移到北极
B.
在同一地点,把它放到水中
C.
在同一地点,把它放到密闭的容器里
D.
在同一地点,让它由静止变为运动
查看完整题目与答案
【单选题】听力原文：W：Your dog certainly seems to know you are his master．Did you have to punish him very often when you train him? M：I found it's much better to praise him when he obeys and not to be so fussy when ...
A.
He has learned a lot from his own mistakes.
B.
He is quite experienced in training wild dogs.
C.
He finds reward more effective than punishment.
D.
He thinks it vital to master basic training skills.
查看完整题目与答案
【简答题】用所给单词的适当形式填空。 1. If you do wrong, you will have the____(punish) that you deserve one day. 2. The _____ (conduct) told the school boys not to throw litter onthe floor of the bus. 3. There is a____(dist...
查看完整题目与答案
【单选题】禽流感病毒常在春秋季节肆虐。下列关于禽流感病毒的叙述,错误的是
A.
细胞微小，结构简单
B.
只能寄生在活的细胞里
C.
能使人、禽得病
D.
能够利用春秋季节来防治禽流感
查看完整题目与答案
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