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【单选题】
水生植物丽藻的细胞液中K + 浓度比它们生活的池水约高1065倍,丽藻细胞从细胞外吸收K+的方式是A.
自由扩散
B.
协助扩散
C.
主动运输
D.
胞吞
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【单选题】On no account ______ ever leave the baby at home alone.
A.
should you
B.
you should
C.
shall you
D.
you shall
【简答题】________是国家信息中心以打造国家经济形势晴雨表为目标推出的一个全面反映我国经济运行态势和经济政策变动的海量信息平台。
【单选题】The possible meaning of the sentence “You should know better than to leave your little sister at home by herself” is _________.
A.
You should be wise enough not to leave your little sister at home by herself.
B.
You should be wise enough to leave your little sister at home by herself.
C.
You should leave your little sister at home by herself.
D.
You should stay at home.
【多选题】Why should you leave adequate time when you trasfer in the stopover?
A.
Sometimes you need to change ternimals.
B.
You should need enough time to go through the security check.
C.
You need time to shop at the duty-free shop.
D.
You need time to meet some friends.
【单选题】When you want to leave your present job, you should write a letter ______.
A.
refusing a job offer
B.
requesting references
C.
of application
D.
of resignation
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