prep-2-126

126.       (31217-!-item-!-188;#058&006093)

Because she knew many of the leaders of colonial America and the American Revolution personally, Mercy Otis Warren was continually at or near the center of political events from 1765 to 1789, a vantage point combining with her talent for writing to make her one of the most valuable historians of the era.

(A) a vantage point combining with her talent for writing to make

(B) a vantage point, when combined with her talent for writing, that made

(C) a vantage point that combined with her talent for writing, and it made

(D) and this vantage point, which combined with her talent for writing to make

(E) and this vantage point, combined with her talent for writing, made

请教为什么B不对，when从句可以做插入语看待吗，这一题我觉得与OG这一题很象啊，请指教

8. Lacking information about energy use, people tend to overestimate the amount of energy used by equipment. such as lights, that are visible and must be turned on and off and underestimate that used by unobtrusive equipment, such as water heaters.

(A)  equipment, such as lights, that are visible and must be turned on and off and underestimate that

(B)    equipment, such as lights, that are visible and must be turned on and off and underestimate it when

(C)    equipment, such as lights, that is visible and must be turned on and off and underestimate it when

(D)   visible equipment, such as lights, that must be turned on and off and underestimate that

(E)    visible equipment, such as lights, that must be turned on and off and underestimate it when

Choices A and B incorrectly use the plural verb are with the singular noun equipment. In B, C, and E, when used by does not parallel amount... used by and nonsensically suggests that the people are used by the equipment. D, the best choice, correctly parallels the amount... used by with that used by, in which that is the pronoun substitute for amount. Moreover, D solves the agreement problem of A and B by omitting the to be verb used with visible and placing visible before equipment', the phrase visible equipment is also parallel with unobtrusive equipment.