( Monitoring heart patients' exercise as well as athletes excersing, is now done by small transmitters broadcasting physiological measurements to nearby recording machines. ) A. Monitoring heart patients' exercise as well as athletes excersing, is now done by small transmitters broadcasting physiological measurements to nearby recording machines. B. Monitoring the exercise of heart patients, as well as athletes excersing, is now done by small transmitters broadcasting physiological measurements to nearby recording machines. C. Small transmitters broadcasting physiological measurement to nearby recording machines are now used to monitor the exercise of both heart patients and athletes. D. Broadcasting physiological measurements to nearby recording machines, small transmitters are now used to monitor heart patients' exercise, as well as athletes exercising. E. Both athletes exercising and heart patients' exercise are now monitored by small transmitters broadcasting physiological measurements to nearby recording machines. 答案是C，错选了E。排除C的原因是感觉主语很长，头重脚轻。第一遍看原文的时候感觉exercise和exercising不平行，但是每个选项读下来发现都是这个形式，（当时没有注意到C的形式）于是就认为这个可能不是考点。E的错误是exercise和exercising吗？麻烦老师讲解。

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关于平行比较，前三句是一个问题，我不太明白这个比较后面的did/is的位置，为何有的放在代词前有的在代词后？比如前两句，did可否放在those are后面？ 最后那句话是否平行呢，that of course可都指代social structure，谢谢 此外，还有句i have more apples than eric‘s apples这句宾语比较是否正确呢？

语法！老师，我想问一下，这几个的区别 Taste buds are xxx，each of them has x. 是错的，each of them has x 这里是一个单独的句子 Taste buds are xxx，each of which has xxx.对了，each这个句子是定语从句吗？还是同位语从句？ Taste buds are xxx，each has…跟each of them has ……是一样的吗 Taste buds are xxx，each having…是同位语修饰吗

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请问may老师此题思路

请问may老师此题思路

请问may老师此题思路

请问may老师此题思路

请问may老师此题思路