OG SC Sample Questions: 14. Sunspots, vortices of gas associated with strong electromagnetic activity, are visible as dark spots on the surface of the Sun but have never been sighted on the Sun’s poles or equator. (A) are visible as dark spots on the surface of the Sun but have never been sighted on (B) are visible as dark spots that never have been sighted on the surface of the Sun (C) appear on the surface of the Sun as dark spots although never sighted at (D) appear as dark spots on the surface of the Sun, although never having been sighted at (E) appear as dark spots on the Sun’s surface, which have never been sighted on 其中C选项，答案给出如下解释： C Although typically introduces a subordinate clause, which has a subject and a verb, but here there is no subject and sighted is not a complete verb.
此外，OG SC中另一题： 98. Even though Clovis points, spear points with longitudinal grooves chipped onto their faces, have been found all over North America, they are named for the New Mexico site where they were fi rst discovered in 1932. (B) Although named for the New Mexico site where first discovered in 1932, Clovis points are spear points of longitudinal grooves chipped onto their faces and have been found all over North America.
答案认为： B The sentence structure indicates that the expected incompatibility is between the geographically based name of the points and their physical properties, which makes no sense; where discovered is missing a subject— the correct form is where they were fi rst discovered.
36.Although eradicated in the United States, polio continues else where and could be brought into the country by visitors.
35. Along with the drop in producer prices announced yesterday,the strong retail sales figures released today seem to indicate that the economy, although growing slowly,is not nearing a recession.
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发表于 2012-9-18 11:38:54
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