英语四级听力-短对话 218

 

Passage Two29.

A. Cooking.

B. Cleaning.

C. Sink care.

D. Painting.

30.

A. 50%.

B. 40%.

C. 30%.

C. 20%.

31.

A. How to release¹ oil from seeds.

B. How to test the local market for oil.

C. Food and oil.

D. Soybean² and oil.

 

 

 

 

 

 

 

 

 

 

 

Passage TwoFrom the beginning of human history, [31]people have used oils from seeds and nuts. [29]Most of the time these oils are used as food, especially in cooking. But sometimes they have other uses. [29]For example, oils are found in paint and in cleaning products, like soap. Oil is separated³ from seeds by using pressure. A machine called a press is often used. Sometimes it is surprising to learn how much oil the seeds contain. Sesame, cotton and sunflower seeds, for example, all contain at least 50% oil. [30]Soybean is an important seed around the world, but it is only 20% oil. So chemicals are needed to release oil from soybeans⁴. The first step in pressing the oil from seeds is to crush⁵ the seeds between two stones. A cloth container or bag is filled with the crushed⁶ seeds. Then the bag is hung up. Some of the oil will flow out of the bag and can be collected. But some oil will remain in the crushed seeds inside the bag. The easiest way to get the rest of the oil out is to place heavy rocks on the crushed material. Oil can also be collected with small, hand-operated machines. Small presses are important in areas where electricity or gasoline⁷ cannot be used. They are also a good way to test if a local market for oil exists.

答案解析：

Questions 29 to 31 are based on the passage you have just heard.

29. What use of oil is NOT mentioned in the passage?

[C]解析：短文第2句开始谈植物油的用处，提到了cooking，paint和cleaning products，只有C项未提及，因而它就是答案。

30. How much oil does soybean contain?

[D]解析：短文提到，大豆的含油量为20%，故选D。百分比作选项，难点不在猜测问题是什么类型，而在于对文中出现的每个百分比（50%和20%）做出准确的笔记。在听到问题后才能根据笔记作答。

31. Which of the following is the best title for the passage?

[A]解析：短文第1句指出，人类使用植物（种子）油有着漫长的历史。然后谈到植物油的用途，主要的植物油来源以及提取植物油，因此，本文的主题是A。从选项的高度概括性来看，本题当问文章的主旨大意。核心词是oil，然后每个选项都给出了另一个关键词：seeds，market，food，soybean。本文多处提到oil和seeds，因此不难选出答案。其他几项的关键词只是文章中的局部内容，不能充当主题。

1 release   

vt.发布，发表，发行；释放，放开

参考例句：

• After my examination I had a feeling of release.考完试后我有如释重负之感。
• This medicine will give you release from pain.这药吃后会解除你的疼痛。

2 soybean   

n.黄豆；大豆

参考例句：

• They raised the baby on soybean milk.他们用豆浆把这个孩子喂养大了。
• I will give you some soybean powder to wash the dishes with.我会拿黄豆粉给你洗碗。

3 separated   

adj.分开的v.分开(separate的过去式和过去分词)

参考例句：

• Her parents are separated but not divorced. 她父母分居但没离婚。
• No child should ever be separated from his mother by force. 绝不能强行使任何一个孩子与母亲分开。 来自《简明英汉词典》

4 soybeans   

n.大豆，黄豆( soybean的名词复数 )

参考例句：

• Soybeans are very rich in protein. 大豆含有丰富的蛋白质。 来自《简明英汉词典》
• In Europe, soybeans aren't as common. 但是在欧洲，大豆的情况并非如此。 来自英汉非文学 - 生命科学 - 口蹄疫疯牛病

5 crush   

v.压垮，压倒，压服，镇压；压碎，碾碎

参考例句：

• This machine is made to crush the rock into powder.这台机器是用来把石头压成碎末的。
• You can't crush so many people into the classroom.不能让这么多人挤进教室。

6 crushed   

a.压碎的，倒碎的

参考例句：

• The car was completely crushed under the truck. 小轿车被卡车压得完全变形了。
• The box was crushed when the car ran over it. 汽车辗过箱子时把它给压碎了。

7 gasoline   

n.(美)汽油

参考例句：

• This car runs 5 miles on a gallon of gasoline.这部汽车一加仑汽油可以行驶五英里。
• There is still some gasoline left in the tank.油箱里还剩下一些汽油。