求教:补充 250题,35,40

ccfish

35.    A star will compress itself into a white dwarf, a neutron star, or a black hole after it passes through a red giant stage, depending on mass.(A) A star will compress itself into a white dwarf, a neutron star, or a black hole after it passes through a red giant stage, depending on mass.
(B) After passing through a red giant stage, depending on its mass, a star will compress itself into a white dwarf, a neutron star, or a black hole.
(C) After passing through a red giant stage, a star’s mass will determine if it compresses itself into a white dwarf, a neutron star, or a black hole.
(D) Mass determines whether a star, after passing through the red giant stage, will compress itself into a white dwarf, a neutron star, or a black hole.
(E) The mass of a star, after passing through the red giant stage, will determine whether it compresses itself into a white dwarf, a neutron star, or a black hole.


Key, 请问A有什么错?


40.    The average weekly wage nearly doubled in the 1970’s, rising from $114 to $220, yet the average worker ended the decade with a decrease in what their pay may buy.(A) with a decrease in what their pay may buy
(B) with what was a decrease in what they were able to buy
(C) having decreased that which they could buy
(D) decreasing in purchasing power
(E) with a decrease in purchasing power


Key:E, 我选了D,不明白分词和介词短语的区别,谁能解释一下?多谢了.

[此贴子已经被作者于2004-1-22 7:31:10编辑过]

Snazzy

35, 'depending' is too far from the subject
40, idioms
'end up with ...
purchasing or buying power

ccfish

小鸭子好热心哦，Thanks!