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【简答题】
植物根尖的结构包括哪些部分?
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【单选题】Which statement is true according to the passage?
A.
People generally understand about 50 percent of what they hear.
B.
We often spend much more time in judging the speaker than in trying to understand what he or she is saying.
C.
It helps us to understand if we think faster than most people speak.
D.
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【简答题】ICSI指的是
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