单选题 China lies mainly in the northern temperate zone under the influence of monsoon (季风). From September and October to March and April next year monsoon blow from Siberia and the Mongolia Plateau into China and decrease in force as it goes southward, causing dry and cold winter in the country and a temperature difference of 40℃ between the north and south. The temperature in China is 5℃ to 18℃ lower than that in other countries on the same latitude in winter. Monsoon blows into China from the ocean in summer, bringing warm and wet currents, thus rain.
Great differences in climate are found from region to region owing to China's extensive territory and complex topography (地形). The northern part of Heilongjiang Province in northeast China has no summer, Hainan Island has a long summer but no winter; the Huaihe River valley features four clear seasons; the western part of the Qinghai-Tibet Plateau is covered by snow all year round; the southern part of the Yunnan-Guizhou Plateau is spring-like all the year; and the northwestern inland region sees a great drop of temperature in the day.

单选题 Which of the following statements about monsoon is true?
A. Monsoon makes the temperature 5℃ to 18℃ lower.
B. Monsoon blowing from May to August brings rain.
C. Monsoon goes from Siberia and the Mongolia Plateau.
D. Monsoon causes dry and cold summer in the country.
【正确答案】 B
【答案解析】[解析] 从文章第一段我们得知季风有两类：一类来自西伯利亚和蒙古高原，一类来自海洋，各有不同特点。A、C、D项都没有说清楚是哪种季风，应排除，故选B。
单选题 The word "current" in the first paragraph most probably means "______".
A. a body of onward running water B. a tendency, movement, or course
C. a mass of continuous moving gas D. a flow of electric charge
【正确答案】 C
【答案解析】[解析] 从“currents”之后的“thus rain”(从而形成雨)，可推出“currents”具有形成雨的功能，根据常识，气流形成雨，得出currents的意思是“不断移动的气流”。故选C。
单选题 There is a great difference in climate from region to region in China because ______.
A. China is so large in size and complicated in landform
B. it's very hot in summer and extremely cold in winter
C. the northern part has no summer and southern no winter
D. China lies in temperate zone under the influence of monsoon
【正确答案】 A
【答案解析】[解析] 从文章第二段句首“Great differences in climate are found from region to region owing to China's extensive territory and complex topography (地形)”可以得出，气候差异的原因是领土广阔且地形复杂，故选A。
单选题 According to the passage, the southern part of the Yunnan-Guizhou Plateau ______.
A. has a long summer and short winter B. is hot in the day and cold in the night
C. is cold in winter but hot in summer D. is neither very hot nor very cold
【正确答案】 D
【答案解析】[解析] 从文章中“the southern part of the YunnanGuizhou Plateau is spring-like all the year”，我们可以断定：云贵高原南部四季如春——既不太冷，也不太热，故选D。
单选题 This passage most likely taken from ______.
A. a column in an evening newspaper B. an article from a news magazine
C. an advertisement from a booklet D. a section of a geographic book
【正确答案】 D
【答案解析】[解析] 整个文章说的都是关于中国的气候及不同地区的不同气候，从而推断可能出现在地理课本上，故选D。