GWD-22-34和GWD-22-28答案对比产生不解，NN进来指教

fightbear

Hydrocarbons, with which fruit flies perfume themselves in species-specific blends, are known to be important in courtship, and apparently this assists flies that taste the hydrocarbons on prospective mates to distinguish their own species from that of others.

 

A.    and apparently this assists flies that taste the hydrocarbons on prospective mates to distinguish their own species from that of

B.    and apparently this assists flies when they taste the hydrocarbons on prospective mates in distinguishing their own species from those of

C.    which apparently assists flies that tastes the hydrocarbons on prospective mates in being able to distinguish their own species from

D.    apparently assisting flies to taste the hydrocarbons on prospective mates to distinguish their own species from those of

E.     apparently assisting flies that taste the hydrocarbons on prospective mates in distinguishing their own species from

答案是E

As Charles Darwin observed, natural selection operates whenever individuals of one genetic composition are better at reproducing than that of others.

 

A.    that of others

B.    the other       

C.    another 

D.    those of another

E.     that of the next

答案是D

为什么这两题一题用those对，一题用了that就错了呢？请指教。

ginachen2008

第一题会，第二题不会

第一道题需要看清楚比较的两方是什么？是Hydrocarbons和others（这里指其它的species）

所以前面根本不用that，those之类的，所以剩下CE选项

C中有being able to，错，所以答案是E