[讨论]prep2－34

34.   (26262-!-item-!-188;#058&003094)

Besides adding complementary flavors to many foods, hot sauces stimulate the release of endorphins in the brain, just as exercise does, and these have a pain-relieving effect like morphine'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

(C) hot sauces and exercise both stimulate the release of endorphins in the brain, and they have a pain-relieving effect like morphine

(D) the release of endorphins in the brain is stimulated both by hot sauces and exercise, and they have a pain-relieving effect like morphine's

(E) the release of endorphins in the brain is stimulated by hot sauces, just as with exercise, and these have a pain-relieving effect like that of morphine

答案是A

白勇的语法书里面明确提到these/this等不能作为句子主语，而且以前也有不少这样的错误例子（多为this不能作为主语），这里为什么these可以作为主语了，有些疑惑，虽然A是错的最少的一个选项。

但是这个是我唯一见到this/that/these/those作为主语名词，还是正确选项的题目，之前很多题目都是不能作主语，这个怎么解释呢？ 我再去查查OG吧，3x

查出结果么? 同样有此疑虑啊....

这个these在这里能当作代词的话，就可以作主语吧？

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

Like比较结构置于句中，比较对象有歧义

我怎摸不觉得这个ＬＩＫＥ有歧义，ＬＩＫＥ后面有ＡＮＤ，明显是跟前面的比较呀？难道能跨过ＡＮＤ比较吗？？？

后面部分的..effect that is like morphine 有表达不清，而且比较模糊，effect 和morphine不能比较，而且不简洁.

即使能比较，that is 多余。