21. It is an oversimplified view of cattle raising to say that all one has to do with cattle is leave them alone while they feed themselves, corral them, and to drive them to market when the time is ripe. (C) all one has to do with cattle is leave them alone while they feed themselves and then corral them and (D) the only thing that has to be done with cattle is leave them alone while they feed themselves, corral them, and
为什么不能选d要选c 22. Although dozens of New York's small museums are either devoted to local history or various ethnic groups, there are many one-of-a-kind museums from Manhattan to the Bronx that are open for exploration on summer weekends. (C) Dozens of New York's small museums are devoted to local history or various ethnic groups, but there are (D) Dozens of New York's small museums are devoted to local history or various ethnic groups, and there are also
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发表于 2004-5-18 01:59:00
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