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请教如下几道题,因本人水平有限,希望朋友们多多指教,如下题目应该选 哪个,谢谢:)
1. Drinking water-------excessive enamel of teeth to become brittle and to chip off, leaving a stained or mottled effect.
(A) containing
(B) in which containing
(C) contains
(D) that is contained
4. Great pain and swelling characterize both sprains and fractures, but------- he affected part and unnatural ting often indicate a bone break. inability lo move
(A) inability to move
(B) they were unable to move
(C) unable to move
(D) when inability to move
9. United States income taxes are paid to the Internal Revenue Service,-------funds for use by the government.
(A) which distributes
(B) and distributes
(C) the distribution of
(D) so that the distribution of
17. Every magnet has two ends, called north and south poles, where the forces it exert are strongest
[此贴子已经被作者于2006-1-13 16:48:32编辑过] |