关于模考中的一些题

模考题中有这样一些题:

1. Most of the purported health benefits of tea come from antioxidants--compounds also found in beta carotene, vitamin E, and vitamin C, and inhibit the formation of plaque along the body's blood vessles.

A. compounds also found in beta carotene, vitamin E, and vitamin C, and

B. compounds also found in beta carotene, vitamin E, and vitamin C, and they

C. compounds that are also found in beta carotene, vitamin E, and vitamin C and that

答案应该选C, 但我选到了A, 因为我觉得第三个有一个我不知道是不是错误, 就是在维他命C的后面是否应该有一个逗号搁开, 然后才是AND THAT, 不然不就成了维他命C 和 AND THAT 之间的并列了吗?

2. Gone are the sharp edges and jutting planes of styles from former eras; instead, designers of everything form cars to computer monitors have adopted a cornerless style of smooth surfaces and curves that is more ergonomic, conforming to the shape of the body rather than flaunting shape for its own sake.

A. more ergonomic, conforming to the shape of the body rather than flaunting shape.

B. ergonomic, conforming more to the body's shape rather than shape flaunted

C. ergonomic, conforming more to the shape of the body than flaunting shape

请问应该选什么?

3, Besides adding complementary flavors to many foods, hot sauces stimulate the release of endorphines in the brain, just as exercise does, and these have a pain relieving effect like morephine's.

A. hot sauces stimulate the release of endorphins in the brain, just as exercise does, and these have a pain relieving effect like morphine's

B. hot sauces stimulate the release of endorphins in the brain, like exercise, and they have a pain relieving effect that is like morphine

答案应该选A, 但我觉得B 也没有错啊,而且我觉得B 的最后一句 they have a pain relieving effect that is like morphine没有错啊, 只不过MORPHINE后面省略了HAVE 而已, 而不应该是A选项中的MORPHINE'S

4. As it is with traditional pharmacies, on line grugstores rely on prescriptions to be successful, since it is primarily prescriptions that attract the customers, who then also buy other health related items.

A As it is with traditional pharmacies, on line grugstores rely on prescriptions to be successful

B.As with the case of traditional pharmacies, on line drupstores rely on prescriptions to have success

C, As is the case with traditional pharmacies, prescriptions are the cornerstone of a successful on line drugstore

答案应该选什么呢, 我想知道AS的结构主要有那些, AS 的考点一般有哪些呢?

谢谢

LZ看看PREP解析吧