The following questions present a sentence, part of which or all of which is underlined. Beneath the sentence, you will find five ways of phrasing the underlined part. The first of these repeats the original; the other four are different. If you think the original is best, choose the first answer; otherwise choose one of the others.
These questions test correctness and effectiveness of expression. In choosing your answer, follow the requirements of standard written English; that is, pay attention to grammar, choice of words, and sentence construction. Choose the answer that produces the most effective sentence; this answer should be clear and exact, without awkwardness, ambiguity, redundancy, or grammatical error.
Four Dynacorp Optimall Omniprocessors were shipped in the fourth quarter, and it brought to 13 the number of these ultra-high-capacity processors shipped during the year.（）
A. and it brought
B. by bringing
C. and brings
D. having brought
E. bringing
参考答案：E
解析：
The gerund form in E conveys the intended meaning that the action of the second clause was simultaneous with the main action of the first clause. A and C both require singular subjects in the first clause that do not exist. B does not make sense in the context of the sentence, and D incorrectly uses the future perfect, since the action in the second clause cannot logically have been completed before the action in the first clause.