If a day of the week serves to express WHEN an action occurs, no preposition is needed:
Mary visited the park last Tuesday.
Here, last Tuesday is an adverb serving to modify visited, expressing WHEN Mary VISITED..
its profits declined much less in the second quarter than analysts had expected
还原成its profits declined much less in the second quarter than its profits declined as analysts had expected
D选项=its profits declined much less in the second quarter than analysts had expected its profits to decline，
those charged for property ， charged for property过去分词作定语修饰those，
这时候表被动用名词+动词的过去分词，
rental rates being charged for property，being charged for property现在分词作定语修饰rental rates，同时being charged表被动，直接用charged，去掉be动词
(B) Correcet；补全省略即there are fewer than one-quarter as many (as there were at the height of their popularity in the late 1950s)； fewer修饰可数名词正确；one-quarter在此做副词修饰as many，后面不用再加of，类似于twice as many/much as
(D) the number指代不清；the amount指代不清，并且只能修饰不可数名词
1.当过去分词在句末时，不管有无逗号，一般都是就近修饰名词; 但偶尔也做状语修饰整个句子，如He hurried to the hall, followed by two guards. 修饰情况由逻辑决定。
2.现在分词在句末时，无逗号是就近修饰的名词的定语；
3.当现在分词在句尾且前有逗号时,修饰邻近句子的主语,做主语的伴随状语或做句子的伴随结果.因此不能用句尾现在分词修饰前面句尾的名词.
A. leaking作为ran aground off的结果状语不如并列合理（ran aground了不一定leaking）；while causing中暗指被省略的causing的主语是barge，逻辑错误，而且用while来连接causing和前面分句的关系不合理(不管是引导时状、还是转折、还是让步、还是条件)；causing the pollution不如直接polluting做结果状语表达有效；
B. and后面的it指代barge错误，barge不能造成污染，而是撞击并泄露的事才造成污染
D.
RON: no -- that would be nonsense.
"was injured 3 times" is clearly something that happened after she joined the army; it can't modify the stuff that precedes it.
remember that modifier errors generally aren't grammar errors; they are generally meaning errors.
The media = all the organizations, such as television, radio, and newspapers, that provide news and information for the public, or the people who do this work
the most concrete reason is that \"at\" is a preposition. prepositions must be followed by nouns; \"as low...\" is not a noun. (by contrast, note that \"temperatures\" -- which follows \"at\" in the correct answer -- is a noun.)
A. 同位语前的and起到强调语气的作用
GWD24-Q23: Discussion of greenhouse effects has usually focused on whether the Earth would warm and by how much, but climatologists have indicated all along that the most obvious effects, and those that would have the largest impact on people, would be extremes of temperature, precipitation, and storminess.
毛毛carina的类比：我认为A选项是这样一个结构，换句中文举例：最大那个苹果，同时也是最红的那个苹果，是我想吃的。主句是最大那个苹果是我想吃的，中间成分，那么刚刚好它也是最红的。所以需要有and，也就是说和用非限定性定从语气上有区别。
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extractionn. 提取; 提炼; 拔出; 开采; 有…血统; 族裔; 拔牙;