单项选择题

According to the passage, the sensitive plant's leaves move quickly when parts of the pulvini ______.

A．drop off
B．become limp
C．revolve
D．twitch
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单项选择题
This passage would most probably be found in ______.
A．a college catalog
B．a textbook
C．a big dictionary
D．classified section of a newspaper
单项选择题
What can be concluded from the passage
A．Amy Johnson was the first pilot to fly to Australia all by herself.
B．Amy Johnson's parents were rich and generous.
C．Amy Johnson was the first woman who owned an airplane.
D．Amy Johnson's dream came tru
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