請教pp兩題

1.Recently documented examples of neurogenesis, the production of new brain cells, include the brain growing in mice when placed in a stimulationg environment or neurons increasing in canarieas that learn new songs.

B.mice whose brains grow  when they are placed in a stimulating environment or canaries whose neurons increase when they

C.mice's brains that grow when they are placed in a stimulating environment or canaries ' neurons that increase when they

D.the brain growth in mice when placed in a stimulating environment or the increase in canaries' neurons when they

E.brain growth in mice that are placed in a stimulating environment or an increase in neurons in canaries that  

答案是E

請問 A是錯在 they 指代不同 不可用在同一句嗎?

D是否錯在when placed 指代不清 (還是指代已經很清楚了 是指mice?)

還是純粹是這邊不應用when 不合句意呢

2.Unlike emergency calls that travel through regular telephone lines, where they thus automatically inform  the operator of the location and phone number of the caller, cellular calls require emergency operators to determine the location of the caller

B.lines and thus automatically inform the operator of the location and phone number of the caller, cellular calls require emergency operators to determine the location of the caller.

C.lines, thus automatically informing the operator of the location and phone number of the caller, the location of the caller on a  cellular phone has to be determined by the operator

D.lines, and thus autonatically inform the operator of the location and phone number od the caller, emergency operators have to determine the location of the cellular phone cller.

E.lines, thus automatically informing the  operator of the location and phone number of the caller, emergency operators receivinfg a cellular call have to determine the location of the caller

答案是B

我想問A的where they那邊  是不是錯在where 把regular telephone lines 指為地點?

還是錯在they指代不明?

A的错误如lz所言，D的when placed有指代不清的嫌疑，不过个人觉得D最后的they只能指canaries' neurons 而不是canaries。所以D还是错