以下是引用老螃蟹在2003-9-27 10:16:00的发言: 4. In cold-water habitats, certain invertebrates and fish convert starches into complex carbohydrates called glycerols, in effect manufacturing its own antifreeze. (A) in effect manufacturing its own antifreeze (B) effectively manufacturing antifreeze of its own (C) in effect manufacturing their own antifreeze. (D) so that they manufacture their own antifreeze (E) thus the manufacture of its own antifreeze
答案是c结构是什么样子得?
如我前面所分析的2个句子 |