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UID512232在线时间 小时注册时间2010-2-21最后登录1970-1-1主题帖子性别保密 
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| Affording strategic proximity to the Strait of Gibraltar, Morocco was also of interest to the French throughout the first half of the twentieth century because they assumed that if they did not hold it, their grip on Algeria was always insecure. 
 \4iT5e$F`.x B without it their grip on Algeria would never be secure---正确
 
 D.without that,they could never be secure about their grip  on  Algeria
 
 %e-|Y/Y7QF
 
 这道题的D选项有一条错因是指示代词this,that,these不能单独用在介词后,不能单独充当主语
 
 
 
 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
 
 
 正确的是a,这个为什么?these单独当做主语了
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