SC 一题求解

bestgame

77.        (28689-!-item-!-188;#058&003708)

Scientists have foundsigns that moving water changed the chemical makeup of the surface of Mars inrecent eras, therefore concluding that its crust is harboring up to threetimes as much water than was previously thought.

(A) eras, therefore concludingthat its crust is harboring up to three times as much water than was

(B) eras, thereforeconcluding that the planet's crust harbors up to three times as much water ormore as was

(C) eras and havetherefore concluded that the planet's crust harbors up to three times as muchwater as

(D) eras and they haveconcluded, therefore, that its crust harbors up to three times as much water,or more, than

(E) eras andconcluded, therefore, that the planet's crust is harboring up to three timesmore water as was

这个题为什么选C，而不是B?

lainemai

C完美平行，但是B得话therefore后面是v-ing的句子，跟主句就是一种从属关系，也就是后面的逻辑主语是前面整个主句，是科学家做出前面的行为后导致后面的conclude的行为，显然不符合逻辑丫。。。而且C选项一看就是so perfect的平行，当然优选C

Jinnxinhe

另外B后面的“as much water or more as was”搭配也不对，重复

bestgame

谢谢！！！

Cl109790230

B，。。。。你不觉得逗号前后两个动词了么，therefore不是连词

flashboy

不选B不是因为 concluding的逻辑主语是前面整个主句，逻辑主语只会是scientists.
B错的原因是as...as中间用了more这个比较级, 这题考的是parallelism and comparison,倍数比较的时候要么是倍数词+比较级+than,或者倍数词+ as many/much+形容词或者副词原形+as. 希望能帮到楼主。