补充一下RON大神。a is wrong because of the participle \\'placing\\', which wrongly indicates that this trend is already placing more women in leadership positions
A还有错的原因是 this fall的位置，可以用来修饰整句，表示今年秋季被认为，也可以用来修饰今年秋季入学的学生。
一定要注意小词的位置 读题的时候就要往偏了读看看会不会又歧义
if you have an appositive modifier that is an abstract noun - such as strategy, figure, statistic, findings, situation, change, difference, etc. - then such an appositive may be allowed to describe the entire situation described in the previous clause.FROM RON
The first presents a problem [a response] to which the argument assesses; the second is the judgment reached by that assessment.注意理解B得含义the argument assess the response to that problem
注意从这里开始就是新的论证过程了SV40 is a monkey virus; however, in 1960 some polio vaccine was contaminated with the virus. Researchers hypothesize that this vaccine was the source of the virus found in mesotheliomas decades later.
this modifier must be followed IMMEDIATELY by the name of the play ("a raisin in the sun" or "LH's a raisin in the sun").
"in 1959" is not a modifier of the play itself, so, that placement doesn't work.
不省略则为：a black hole lies at the center of the Milky Way and lies a the center of many of the 100 billion other galaxies estimated to exist in the universe.
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要看清题目啊啊啊啊啊啊啊简直了这种自大式的做题方法简直无语了对我自己