prep1-86

778879

86.   (29247-!-item-!-188;#058&003883)

An international team of astronomersworking at telescopes in the Canary Islands and Spain has detected at least 18huge gas spheres estimated to have 5 to 15 times the mass of Jupiter, thesolar system's largest planet.

(A) astronomers working attelescopes in the Canary Islands and Spain has detected at least 18 huge gasspheres estimated to have 5 to 15 times the mass of Jupiter

(B) astronomers working attelescopes in the Canary Islands and Spain has detected at least 18 huge gasspheres estimated to be 5 to 15 times Jupiter's mass

(C) astronomers is working attelescopes in the Canary Islands and Spain, having detected at least 18 huge gasspheres that are estimated at 5 to 15 times the mass of Jupiter

(D) astronomers, working attelescopes in the Canary Islands and Spain, and has detected at least 18 hugegas spheres estimated at 5 to 15 times the mass of Jupiter

(E) astronomers, working attelescopes in the Canary Islands and Spain, has detected at least 18 huge gasspheres they have estimated to be 5 to 15 times Jupiter's mass

语法笔记上面说BCD是比较双方不对等。但BCD和A的比较不是一样的么，都是gas spheres和themass of Jupiter啊。还是说A选项中由于用了have因此不构成比较，而BCD中用的是be所以是比较？求指点

778879

求解答啊啊啊！

清飞扬

首先考虑主谓一致的关系，主语是An international team of ，所以谓语应该是单数
A.是has
B.是has
C.是is，但是是having detected，这个不应该用独主，因为ing型独主是修饰前面整句的，是一种inevitable consequence，可是这里不是，排了
D.N, 插入结构，and has， 不是正确的句子结构
E. has
所以在ABE中选
2. 这时候未划线结构能够成为比较好的提示thesolar system's largest planet.是修饰前面的noun的，这里有点同位语的结构, 所以这个结尾的名词，只能是planet,不能是mass,所以只能是A

778879

谢谢楼上的解释，但我还是想知道BCD和A选项是否比较对象不对等

lvlv10

同不懂  求解