大权650

Snazzy

650.    Since savings banks have to use short-term deposits to finance long-term fixed-rate mortgage loans, they sometimes lose money when there is a rise in short-term rates and, on the other hand, they are unable to raise the rates on their mortgages.

(A) when there is a rise in short-term rates and, on the other hand, they are unable to raise
(B) when short-term rates rise and they are unable to raise
(C) when a rise in short-term rates occurs and, correspondingly, there is no rise possible in
(D) with a rise in short-term rates, and they are unable to raise
(E) with short-term rates on the rise and no rise possible in

B. but why? thanks

ecsniffer

A，C错在there is +动作性名词
c:a rise in short-term rates occurs 不够简洁，rise本身可以做动词
LZM（P220）:独立主格一般用介词with引入，其本身有明白清楚的主语，只是没有谓语动词或省略了being，该结构使得句子紧凑，描绘生动。
with短语作独立主格结构的构成是：with+名词/代词+现在分词（过去分词、介词短语、动词不定式、形容词等）其中的名词/代词就是该独立结构的主语。而当with+名词/代词+现在分词（过去分词）时，with可以省略。
其中D: with a rise(动作性名词) +in
       E: with short-term rates on the rise
       with no rise possible in
的伴随短语使用都不正确不如用从句表达的准确。