任务一 完形填空
阅读下面短文，掌握其大意，然后从各题所给的四个选项中选出一个最佳答案。
The Yellow River is the second longest river in China. The “Yellow” in its name is from the colour of the mud and sand. About ninety per cent of the mud and sand in the Yellow River 1 the Loess Plateau. A lot of mud and sand goes into the Yellow River in the season of heavy rainfall 2 the Loess Plateau is loose and easy to be washed away.
The Yellow River originates(起源) from the Qinghai-Xizang Plateau and its 3 is similar to the character ji(几). It runs from west to 4 through nine regions and runs into the Bohai Sea. The Yellow River is about 5,464 kilometres long, and the 5 it runs through covers about 795,000 kilometres.
In Chinese 6, the Yellow River is the most important birthplace. Ancient Chinese people lived on this land, worked 7 and created a rich culture. Today, the area around the Yellow River is very important for farming. The Yellow River also 8 water for factories and people’s lives.
What’s more, the Yellow River 9 an important role in Chinese culture. People created a lot of poems, paintings, and songs about it. The Yellow River is a 10 of Chinese spirit, and we call it the “Mother River”.
() 1. A. connects with B. comes from C. walks into D. bases on
() 2. A. although B. until C. unless D. because
() 3. A. time B. voice C. shape D. colour
() 4. A. east B. north C. north-east D. north-west
() 5. A. height B. area C. length D. weight
() 6. A. language B. music C. art D. history
() 7. A. recently B. quickly C. hard D. hardly
() 8. A. changes B. provides C. produces D. gives
() 9. A. plays B. promises C. realizes D. explains
()10. A. progress B. century C. symbol D. location

1-5 BDCAB 6-10 DCBAC

1. 考查短语辨析：句意为黄河中90%的泥沙都来自黄土高原，come from意为“来自”，符合语境，其余选项connects with（连接）、walks into（走进）、bases on（基于）均不符合句意。
2. 考查连词辨析：空格后内容是解释暴雨季大量泥沙汇入黄河的原因，because表因果，意为“因为”，符合逻辑，其余选项although（尽管）、until（直到）、unless（除非）均不符合语境。
3. 考查名词辨析：句意为黄河的形状和汉字“几”很相似，shape意为“形状”，符合语境，其余选项time（时间）、voice（声音）、colour（颜色）均不符合句意。
4. 考查地理常识和名词辨析：黄河的流向是自西向东，east意为“东”，符合客观事实。
5. 考查名词辨析：后文数值对应的是黄河流经的区域面积，area意为“区域、面积”，符合语境，其余选项height（高度）、length（长度）、weight（重量）均不符合描述。
6. 考查名词辨析：后文提到古代先民在此繁衍创造文化，对应“在中国历史上”，history意为“历史”，符合语境。
7. 考查副词辨析：固定搭配work hard意为“辛勤劳作”，符合古代先民在此努力劳作创造灿烂文化的语境，其余选项recently（最近）、quickly（快速地）、hardly（几乎不）均不符合句意。
8. 考查动词辨析：固定搭配provide sth. for...意为“为……提供某物”，此处指黄河为工厂和居民生活提供水源，符合用法和语境。
9. 考查固定搭配：play an important role in...是固定短语，意为“在……中扮演重要角色/发挥重要作用”，符合语境。
10. 考查名词辨析：句意为黄河是中国精神的象征，symbol意为“象征”，符合语境，其余选项progress（进步）、century（世纪）、location（位置）均不符合句意。