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Protect against UV rays (紫外线). Long-term stay in the sun creates risk to your eyes. No matter what the season is, it’s extremely important to wear sunglasses. 2

C. They can properly protect your eyes.

【解析】空白处前面的句子No matter what the season is，it’s extremely important to wear sunglasses.意为＂无论是什么季节，戴太阳镜是极其重要的＂，属于总结概括句。选项C意为＂它们可以适当地保护你的眼睛＂，本句是对上句观点的举例说明，能很好地顺接语境。故选C。 【答案】C

(2)从行文逻辑上判断——转折关系

转折关系主要指英语行文中后句对前句构成逆转的逻辑关系。如果空格前后两句话之间有however(然而)，nevertheless(然而，不过)，still(还，仍然)，though(可是，不过，然而)，yet(然而)，on the contrary(正相反)，in contrast(与此相反，相比之下)，in comparison(比较起来，与??比较)，by comparison(相比之下)等词，则表明前后两句话存在逻辑上的逆转，空格处很有可能表示转折。

Don’t forget to forgive yourself. 5 But it can rob you of your self-confidence if you don’t do it.

E. For some people, forgiving themselves is the biggest challenge.

【答案】E

(3)从行文逻辑上判断——因果关系

做题时最重要的是要在读懂空格前后的句子的基础上，依据彼此的关系来确认答案。有时，前后的句子之间出现as a result(结果)，thus/therefore(因此)，so(such)...that(如此??以至于)等标志性词语，表明前后句有着原因和结果的关系，说明前因后果或者前果后因等情况。

Large cities were impossible until agriculture became industrialized. Even in advanced agricultural societies, it took about ninety-five people on farms to feed five people in cities.