二、综合题。
1.「正确答案」 1-7 CAAABCA
「答案解析」 1. C. 分析：利用题干中的核心结构Hunting and fishing和特征结构men, young and old作为答案线索，这样发现答案相关句：Sports in America take a variety of forms: organized competitive struggles, which draw huge crowds to cheer their favorite team to victory; athletic games, played for recreation（娱乐）anywhere sufficient space is found; and hunting and fishing.发现答案相关句中并没有提到men, young and old，根据该相关句及相邻句子的句意不能“推导出”也不能“反驳”问题句的句意，所以该句的说法为“没提到”。
2. A. 分析：利用题干中的核心结构和特征结构（Professional baseball teams和the regular baseball seasons of spring and summer）作为答案线索，这样发现答案相关句：Baseball is the most popular sport in the US. It is played throughout the spring and summer（对应the regular baseball seasons of spring and summer）, and professional baseball teams play well into the fall（对应play for a long period of time in the fall）. 判断该句的句意与问题句的句意一致，该题主要是考察well into the fall（一直到秋季末）结构的含义。
3. A. 分析：利用题干中的核心结构（Baseball 和cricket）作为答案线索，这样发现答案相关句：Although no other game is exactly like baseball, perhaps the one most nearly like it is the English game of cricket（板球）.判断该句的句意（与棒球运动最接近的就是英国的板球）与问题句的句意一致， 因此该问题句的说法“正确”。
4. A. 分析：利用题干中的核心结构（Football 和spectator sport）作为答案线索，这样发现答案相关句：Some sports are called spectator sports, as the number of spectators greatly exceeds the number playing in the game.（第一段最后一句）…the football stadiums of some of the largest universities seat as many as 80,000 people.该题考察考生的推断能力：既然最大的足球体育馆能容纳下80,000观众，那么根据spectator sports（观赏性运动）的定义，足球应该是spectator sports.
5. B. 分析：利用题干中的核心结构（basketball 和football）作为答案线索，这样发现答案相关句：Basketball is the winter sport in American schools and colleges. Like football, basketball originated in the US and is not popular in other countries. Many Americans prefer it to football because it is played indoors throughout the winter and because it is a faster game. 该相关句的说法与问题句的说法不一致（主要是“理由”的表述方面不一致），所以判断问题句的说法“不正确”。
6. C. 分析：利用题干中的核心结构（nationwide university matches）作为答案线索，这样发现答案相关句：It is a very popular game with high schools, and in more than 20 states, state-wide high school matches are held yearly.发现该句的说法与问题句的说法“不一致”，但又不能因此判断问题句的说法“错误”。因此判断该题的说法为“没提到”。
7. A. 分析：利用题干中的Horse-racing fans作为答案线索，这样发现答案相关句：Other spectator sports include wrestling（摔交）, boxing, and horse racing. …… The so-called sportsmen are the spectators, who do “not assemble” primarily to see the horses race, but to bet upon the outcome of each race. Gambling is the attraction of horse racing.根据相关句群的句意（赛马比赛的吸引人之处是赌博， 赛马迷只是对赌博感兴趣）发现问题句的说法与这些相关句的说法一致，因此问题句的说法“正确”。
2.「正确答案」 1-4 CAFB
5-8 BEDA
「答案解析」
1．C 第三段解释了为什么soot会增加地球升温效应。
2．A 第四段介绍了soot在两方面起的作用：（1）soot增加了雪吸收太阳能量和热量的能力；（2）soot导致海洋和陆地上空的大气层发生变化。
3．F 第六段的关键句子是：“……greenhouse gases are the primary cause of climate warming during the past century.”
4．B 第七段介绍了在研究北半球的纬度、雪覆盖面和日照诸因素与气温升高之间的关系方面取得的成果。
5．B 选择B的依据是第一段。有关的句子是：“……black soot may be responsible for 25 percent of observed global warming over the past century.”选项B中用了过去式contributed，也是选B的一个线索，因为第五题的题干中有in the twentieth century，这个时间状语要求谓语动词用过去式，而4个选项中只有B项的动词用的是过去式。
6．E Hansen cautioned和greenhouse gases仅出现在第六段。该段的大意是：虽然煤烟在改变全球气候方面所起的作用相当显著，但是上个世纪气温上升的主要因素还是温室气体。选项E概括了第六段的意思。
7．D 本题答案的依据是第二段第一句。
8．A 本题答案的依据是第五段的下列句子： Soot's increased absorption of solar energy is especially effective in warming the world's climate．“This forcing is unusually effective, causing twice as much global warming as a carbon-dioxide forcing of the same magnitude,”Harisen noted.
