7. (24887-!-item-!-188;#058&001530)
Obtaining an investment-grade rating will keep the county's future borrowing costs low, protect its already-tattered image, and increase its ability to buy bond insurance.
(A) Obtaining an investment-grade rating will keep the county's future borrowing costs low, protect
(B) To obtain an investment-grade rating will keep the county's future borrowing costs low, and protect
(C) Having obtained an investment-grade rating will, in keeping the county's future borrowing costs low, protect
(D) To obtain an investment-grade rating would keep the county's future borrowing costs low, protecting
(E) Obtaining an investment-grade rating, keeping the county's borrowing costs low, would be protecting
答案为什么是A啊
16. (25451-!-item-!-188;#058&001942)
In her later poems, Phyllis Wheatley's blending of solar imagery, Judeo-Christian thought and figures, and the images she borrowed from ancient classicism suggesting her range and depth of influences, not the least of which is her African heritage.
A) the images she borrowed from ancient classicism suggesting
(B) borrowing images from ancient classicism, suggests
(C) she borrowed images from ancient classicism, which suggests
(D) images borrowed from ancient classicism suggests
(E) images that she borrowed from ancient classicism, suggesting
答案是D,但D中用suggests对吗?