单项选择题

Questions 18-20 are based on the following monologue introducing a nature tendency of plants. You now have 15 seconds to read Questions 18-20. If we see some plants close their leaf pores, we can deduce that they are living in ______.

A．rainy area
B．hot area
C．drought area
D．windy area

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单项选择题

单项选择题

Questions 18-20 are based on the following monologue introducing a nature tendency of plants. You now have 15 seconds to read Questions 18-20. If we see some plants close their leaf pores, we can deduce that they are living in ______. 您的浏览器不支持 audio 元素。