Question

If you believe in thermometers（温度计）,you should believe in global warming. And if you believe in eating fries with your burger, you should worry more about carbon emissions.

It won't happen overnight, but as the planet's climate changes, the growth cycles of main crops will all be heavily affected .Here are three of the crops that might not beat the heat.

The potato actually needs a great deal of beauty rest to develop properly. “They need a cool nighttime temperature in order to start growing the tuber, the part that we eat,” Nelson says.

Temperature and altitude are two primary concerns in coffee growth, and farmers are stuck between a rock and a hard place. “We know that coffee grows in a certain temperature range,” Nelson says. “They've been moving up the mountains, but at some paint you run out of mountains to move up.” Higher-grade strains of Arabica coffee in Central American regions are at particular risk due to the need for lower growing temperature, especially since diseases and pests are also becoming more of a factor as temperatures rise.

Even if you're looking at the direct effects of temperature alone, rice is in trouble. “As nighttime temperatures go up ,the rice is going to have a problem flowering and won't make as many seeds,” Nelson says. In addition to this direct heat consequence, rising sea levels will flood many rice fields and destroy water salinity levels, while droughts will lower production, raise prices, and further shame westerners who are too clumsy with chopsticks to be able to clear their plates once a new grain is adopted.

1.What is the closest meaning to the underlined word “emissions” in Paragraph 1?

A. Mixture.    B. Pollution.

C. Going down.    D. Letting off.

2.What does the potatoes' development need according to Nelson?

A. Enough water and salt.    B. Cool temperature at night.

C. Much sunshine and fresh air.    D. Sudden rise of the temperature.

3.The rice is difficult to flower, probably because______.

A. sea levels go up suddenly    B. the temperature rises at night

C. many seeds can't be produced    D. both temperature and altitude rise

4.What is the best title for the text?

A. How Does Global Warming Affect Westerners

B. How Does The Cool Temperature Affect Ride

C. What Is The Real Reason For Crops' Growth

D. Three Crops That Won't Survive Minor Climate Changes

Answer

1.D

2.B

3.B

4.D

【解析】这篇短文介绍马铃薯、咖啡和水稻三种需要凉爽的夜间温度才能够生长的好。

1.词义猜测题。根据该句上半句提到吃汉堡薯条，这些食物是可能会导致碳排放。emission排放。mixture混合物；pollution污染；go down下降；let off放出。故选D.

2.细节理解题。根据第三段中的“‘They need a cool nighttime temperature in order to start growing the tuber, the part that we eat,’ Nelson says.”可知，马铃薯的发展需要凉爽的温度。故选B.

3.细节理解题。根据最后一段中的“As nighttime temperatures go up, the rice is going to have a problem flowering and won't make as many seeds”可知，随着夜间温度升高，水稻不会生出那么多种子。故选B.

4.主旨大意题。根据这篇短文介绍马铃薯、咖啡和水稻三种需要凉爽的夜间温度才能够生长的好，可知只有选项D能够概括文章大意。故选D.

【名师点睛】

每篇文章都会有一个主旨要义。主旨要义型题范围一般包括：短文标题、主题大意或段落大意等。此题型要求考生在理解文章后归纳文章要点，概括中心思想。考生需要分析文章的篇章结构，抓住文章的开头或结尾，从而找出能概括文章的主题句。主题句的特点：（1）语言特点：归纳性、概括性、抽象性；（2）位置特点：主题句常出现在“总结性”语言的“信号词”后，如：in summary, in a word, as a result, finally, in short, in conclusion和in brief等；主题句常出现在“转移话题式”语言的“信号词”后，如：but, however, nevertheless等。标题的语言特点：独特新颖 、概括性强、短小精炼。

A．主旨大意主要的设题方式有：

（1）Which of the following best gives the main idea of this newspaper article?

（2）The best headline for this newspaper article is ____.

（3）What is the topic of the text?

（4）The text is mainly about ______.

（5）What's the main point the writer is trying to make in the last paragraph？

（6）What would be the best title for the text？

B．主旨大意主要的解题策略有：

（1）标题类。文章标题可以是单词，短语，也可以是句子，它的特点是：短小精悍，多为一短语；涵盖性强，一般要求能覆盖全文，其确定的范围要恰当，既不能太大，也不能太小；精确性强，不能随意改变语言表意的程度及色彩。

（2）主旨类。概括主旨的方法是：先看首尾或各段开头再看全文找主题句，若无明显主题句，就通过关键词句来概括(如议论文中寻找表达作者观点态度的词句，记叙文寻找概括情节和中心的动词或反映人物特点的形容词)。文中出现两种或两种以上的不同观点时，务必牢记作者的观点才是体现全文中心的。此时，要注意一些转折词，如but, yet, however, although, in spite of, by contrast, on the contrary等。当文章中表示相反的观点时，往往用到这些词。答题时要弄清哪个是作者的观点，排除迷惑性信息，准确归纳主旨大意。

如小题4，根据这篇短文介绍马铃薯、咖啡和水稻三种需要凉爽的夜间温度才能够生长的好，可知只有选项D能够概括文章大意。