正确答案: D

断裂

题目：地衣营养繁殖的主要方式是( )。

解析：D

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举一反三的答案和解析：

[单选题]

Unwillingly

[单选题]After seeing the good students’ designs，some students _________.

thought they would not win the prize

解析：【解析】细节理解题。由第四段倒数第二句Some of us would wander past the good students’ desks and then return to our own projects with a growing sense of hopelessness可知。