1When an active tooth in the shark’s jaws is lost or worn down, many spare teeth lie in seemingly limitless reserve, each of which are ready to slide into the appropriate position. A. When an active tooth in the shark’s jaws is lost or worn down, many spare teeth lie in seemingly limitless reserve, each of which are ready to slide into the appropriate position. B. Whenever an active tooth is lost or worn down, many spare teeth lie in seemingly limitless reserve in the shark’s jaws, which are each ready to slide into the appropriate position. C. Many spare teeth lie in seemingly limitless reserve in the shark’s jaws, each one of which are ready to slide into the appropriate position when an active tooth is lost or worn down. D. The many spare teeth lying in seemingly limitless reserve in the shark’s jaws, each one of which is ready to slide into the appropriate position whenever an active tooth is lost or worn down. E. In the shark’s jaws, many spare teeth lie in seemingly limitless reserve, each one ready to slide into the appropriate position whenever an active tooth is lost or worn down 请问单复数到底是啥?还有答案!! 2Almost like clones in their similarity to one another, the cheetah species’ homogeneity makes them especially vulnerable to disease. A. the cheetah species’ homogeneity makes them especially vulnerable to disease B. the cheetah specie especially is vulnerable to disease because of its homogeneity C. the homogeneity of the cheetah species makes it especially vulnerable to disease D. homogeneity akes members of the cheetah species especially vulnerable to disease E. members of the cheetah species are especially vulnerable to disease because of their homogeneity
答案到底是b or e??? 还有一数学啊,怎么现在的数学都不那么简单了??22. 已知每张账单都四舍五入到1元, 问账单总金额偏差是否小于8元? (1) 每张账单的金额都小于7.75元 (2) 总计有14张账单 请教了各位
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