新SAT语法官方题型解析-句法题(2)

>>SAT考试试题库：新SAT语法官方题型解析-句法题(2)

Typically, the ice sheet begins to show evidence of thawing in late summer. This follows several weeks of higher temperatures.

Which choice most effectively combines the two sentences at the underlined portion?

A) summer, following

B) summer, and this thawing follows

C) summer, and such thawing follows

D) summer and this evidence follows

答案：A

答案解析：这是一道很典型的句子合并题，正确答案选A。分析句子不难发现，题目中的主干句是the ice sheet begins to show evidence of thawing in late summer，A选项中，直接在主句后使用现在分词短语following several weeks of higher temperatures，在这样的结构中，分词短语与主句之间用逗号隔开，此时分词短语在全句中起状语作用，相当于是一个修饰的成分，因此A选项结构最为简洁，相当于简单句。根据简洁原则，语法中的简单句>复合句>并列句，而B C D三个选项中的结构均为and连接两个完整句，属于并列句，

因此A选项具有选择优先性。

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