问题描述：
英语高手进．．．语法题!
When an animal estivates,_____ hibernates,its metabolism slows and its body temperature drops.
A) as when it
B) so its
C)as if
D) so that
先哪个,并请解释WHY?
When an animal estivates,_____ hibernates,its metabolism slows and its body temperature drops.
A) as when it
B) so its
C)as if
D) so that
先哪个,并请解释WHY?
问题解答：
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