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It is (believed)that trees can warn (each other) (to) danger by releasing (chemi
It is (believed)that trees can warn (each other) (to) danger by releasing (chemi
游客
2023-09-22
57
管理
问题
It is (believed)that trees can warn (each other) (to) danger by releasing (chemicals) into the air.
选项
A、believed
B、each other
C、to
D、chemicals
答案
C
解析
把to改为of,warn sb.of sth.是固定搭配。
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