18无( )
A. Where energy is accessible.
B. When it is necessary to save energy.
C. What electricity means to modern life.
D. Why it is important to protect the environment.
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1、Unit5中国众多的河流和湖泊提供了充足和可靠的水供应。但由于高速的经济发展,饮用水源头大多已遭到污染。全国水资源分布不均,而且据预测,2030年中国人口将达16亿。水资源稀缺将不可避免地成为重大关切。南水北调工程(the South-North Water Transfer Project)已开始从长江输水至山东省。水利部在十三五规划中突出了水安全(security)对于国家安全的战略意义,并将加大力度保护水资源和恢复水生态系统。
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15. 无( )
A. Someone who gives advice on shopping.
B. Someone who likes shopping very much.
C. Someone who owns a shop.
D. Someone who works in ashop.
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3.源于12世纪、长约5.28米的《清明上河图》已被重新制作成为比原图大30倍的电子动态版并添加了配音(soundtrack)。这幅宋代画卷是宫廷(imperial)画家张择端所作,描绘了12世纪首都汴京(今开封市)的风景及人们的日常生活。动态版《清明上河图》继2010年在中国上海世界博览(World Expo 2010 in Shanghai)会首次展出后,已先后在中国澳门、香港、台北展览。
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17. 无( )
A. Annoyed.
B. Regretful.
C. Excited.
D. disappointed.
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9. 无( )
A. The differences between good and bad students.
B. The way good students behave themselves.
C. The characteristic behaviors of bad students.
D. The ways to become good students.
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1、Why do friendships end? The author offers some( ) into the question. Friendships end because the situations friends are in ( )These changes can＇t help but ( ) a friendship. Next, the friends ( ) may change. The breakups can be ( )or one-sided. It hurts less when ( ) friends change. What tends to( ) most is when just one friend changes. A third reason is that as much as two people might want a friendship to survive, one or both of them might ( ) neglect it. Lastly,( ) can cause the endof a friendship, since most friendships have breaking( )under pressure.
解析：解析:为什么友谊会结束?作者对这个问题提出了一些见解。友谊的结束是因为朋友的处境发生了变化。这些变化不能不影响友谊。其次,朋友本身可能会改变。分手可以是相互的,也可以是单方面的。当朋友双方都改变时,伤害就会小一些。最伤人的是只有一个朋友改变了。第三个原因是,尽管两个人可能都想要一段友谊继续下去,但其中一人或两人可能会无意中忽视它。最后,冲突会导致一段友谊的结束,因为大多数友谊在压力下都会破裂。
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14. 无( )
A. Finding alternative fuels
B. Emissions reduction.
C. Less noisy aircrafts.
D. Environmental protection.
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8. The ( ) house smells as if it hasn＇t been lived in for years.
A. little white wooden
B. little wooden white
C. white wooden little
D. wooden white little
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5. 无( )
A. Whether a polar bear should live in California.
B. Whether wild animals should be rescued or not.
C. Whether they should go to the Zoo this Saturday.
D. Whether zoos are good for animals or not.
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