参考答案及解析：

　　1.The correct answer is D

　　Explanation

　　The sentence implies that Kelly, in light of her neighbor’s previous behavior, found his actions to be audacious, which means bold or daring.

　　2.The correct answer is B

　　Explanation

　　A harbinger is a sign of something yet to come. Temperatures are presented as “harbingers” in this sentence because they show that “a still warmer world” might be coming.

　　3.The correct answer is B

　　Explanation

　　Choice B is correct. The term “Although” in the first clause suggests that Rolf’s response to the “salesman’s rude remarks” differed from his usual behavior. If Rolf is usually “timorous,” or timid, complaining to the salesman’s manager would be an uncharacteristic response.

　　4.The correct answer is C

　　Explanation

　　Someone who is “intimidated” by his position would be “chary of,” or cautious about, expressing his honest opinion of company proposals.

　　以上就是4道SAT阅读完成句子练习题及答案。同学们在备考SAT阅读过程中，一定要结合一定的练习题，检测自己的学习成果。