阅读理解 The Intergovernmental Panel on Climate Change (IPCC) was set up in 1988 to assess information on climate change and its impact. Its Third Assessment Report predicts global temperature rises by 2100 of between 1.4°C and 5.8°C. Although the issue of the changing climate is very complex and some changes are uncertain, temperature rises are expected to affect countries throughout the world and have a knock-on effect with sea-level rises. Scientists have argued about whether temperature rises are due to human activities or due to natural changes in our environment. The IPCC announced in 2001 that "most of the warming observed over the last 50 years is likely to be attributable to human activities". This was a more forceful statement than in 1996 when the Second Assessment Report stated that there was a "discernible human influence on the climate" which was the first time they had concluded such a link. Many experts believe the faster the climate changes, the greater the risk will be. Key points of the projections for climate change globally include that by the second half of the 21st century, wintertime rainfall in the northern mid to high latitudes and Antarctica will rise, that meanwhile Australia, Central America and southern Africa are likely to see decreases in autumn precipitation, that some land areas in the tropics will see more rainfall, and that there will generally be more hot days over land areas.

单选题 IPCC probably does not________.

【正确答案】 B

【答案解析】是非题型。根据文章第一句话The Intergovemmental Panel on Climate Change(IPCC)was set up in 1988 to assess information on climate change and its impact．可以确定A，C两项已在文中提到。根据第一段最后一句的…temperature rises are expected to affect countries throughout the world得知IPCC的行为是针对全球的，可以确定D项内容也是这一组织要做的事情。因而只有B是错误的。

单选题 According to the passage, a Chinese city that recorded 45 degrees Celsius at noon on August 4,2004, will most probably witness a temperature measuring ________at 12:00 sharp in the year of 2100.

【正确答案】 D

【答案解析】推断题型。在第一段的第二句话中说Its Third Assessment Report predicts global temperature rises by 2100 of between 1.4℃ and 5.8℃．文中没有提到Third Assessment Report的时间，所以知道了2004年8月4日的温度并不能确定2100年的温度。

单选题 According to the author, climate researchers________.

【正确答案】 C

【答案解析】推断题型。从第二段第一句话Scientists have argued about whether temperature rises are due to human activities or due to natural changes in our environment．中的“argue”和“whether”两个词得知科学家们并不确信，因而C项正确。

单选题 Based on the text, we know that temperature rises will probably________.

单选题 The IPCC announcement three years ago that "most of the warming observed over the last 50 years is"________.

【正确答案】 A

【答案解析】短语题型。根据第二段第二句The IPCC announced in 2001 that“most of the warming observed over the last 50 years is likely to be attributable to human activities”．中的attributable to指“可归于……的”；C项的due to指“由于，应归于”； because是连词后面跟从句，因而应排除B。修饰due to的副词不应放在to的后面，因而排除c。D不符合表达习惯。

单选题 Which statement was more forceful?

单选题 The Second Assessment Report was released ________years ago.

单选题 Such a link in the passage refers most probably to ________.

单选题 The risk mentioned in the text probably refers to________.

单选题 Obviously, the word "precipitation" most probably refers to________.

【正确答案】 B

【答案解析】词义题型。从第三段的内容…wintertime rainfall in the northern mid to high latitudes and Antarctica will rise，that meanwhile Australia，Central America and southern Africa are likely to see decreases in autumn precipitation，that some land areas in the tropics will see more rainfall…．来看，所谈论的是不同地区、不同时节的降雨量。因而，可推断precipitation为“降水，降水量”。rainfall降雨，降雨量； latitude纬度，范围；projection发射，计划，设计。