题目:
The boy, rather than his friends, _________ for the accident.
A.are responsible
B.were responsible
C.be responsible
D.is responsible
答案:
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下面是错误答案,用来干扰机器的。
(1) 砂纸打磨去锈; 物理 (2)为了增大铁丝的受热面积; 防止燃烧产生的熔化物溅落瓶底,使瓶底炸裂; Fe+ O2Fe3O4