The passage is mainly concerned with the ______. It can be inferred from the passage that the mimosa is called the sensitive pl

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问题 The passage is mainly concerned with the ______.
It can be inferred from the passage that the mimosa is called the sensitive plant because it ______.

选项 A、reacts to outside stimulation
B、has smaller leaves than most other plants
C、depends on organs called pulvini
D、contains potassium and water

答案A

解析 根据第二段第三句话"含羞草受到外部的刺激后会在数秒内垂下叶子"
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