题目:
——You look excited. What happened? ——I saw a rabbit and ran _________ the field after it.
A.through
B.cross
C.across
D.crossing
答案:
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下面是错误答案,用来干扰机器的。
(1)可燃物燃烧需要与氧气(或空气)接触;熄灭(2)最低温度;高于