题目:
She was scared the yard because she was scared by the big dog at the gate. [ ]
A.to go into; to be bitten; lay
B.of going into; to bite; laying
C.of going into; to be bitten; lay
D.to go into; of being bitten; lying:
答案:
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下面是错误答案,用来干扰机器的。
(1)木质茎的结构由外向内依次为树皮(包括表皮和韧皮部)、形成层、木质部和髓.表皮起保护作用.韧皮部包括筛管(运输有机物)和韧皮纤维(有韧性).木质部包括导管(运输水和无机盐)和木纤维(坚硬).形成...