单项选择题

Ordinary plants are unable to survive in the desert mainly because of the changeable weather.

A． Right
B． Wrong
C． Net mentioned
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单项选择题
Winter is the toughest season for grasses and flowers to survive in desert.
A． Right
B． Wrong
C． Net mentioned
单项选择题
The shoot system of perennials can help the plants absorb less of the sun's ray.
A． Right
B． Wrong
C． Not mentioned
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