The passage is mainly concerned with the ______. According to the passage, what causes potassium and water in the mimosa to shi

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问题 The passage is mainly concerned with the ______.
According to the passage, what causes potassium and water in the mimosa to shift from some cells to others?

选项 A、Signals from the pulvini.
B、Movements of the leaf stalks.
C、Electrical impulses.
D、Nerve signals.

答案C

解析第二段第四句This causes potassium...中的This指的正是上句中的electrical impulses。

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本试题收录于： GCT工程硕士（英语）题库专业硕士分类

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The passage is mainly concerned with the ______. According to the passage, what causes potassium and water in the mimosa to shi

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