题目内容

【题目】根据首字母及汉语提示,写出下列句子中的完全形式。
(1)Bad news. There is a big e happened in Japan on March 11, 2011.
(2)I have n been to Beijing. It's my dream.
(3)Sleeping late is bad for our health , e for children.
(4)I have a toothache; I must go to see a d .
(5)This Sunday morning we are going to have a picnic u it rains.

【答案】
(1)earthquake
(2)never
(3)especially
(4)dentist
(5)unless
【解析】(1)考察名词,句意:这有一个坏消息:2011.3.11,日本发生了一场大地震,故填earthquake。
(2)考察副词,句意:我从来没有去过北京,这是我的梦想,故填never。
(3)考察副词,句意:熬夜对身体不好,尤其是孩子,故填especially。
(4)考察短语词组,句意:我的牙很痛,我必须去看牙医,故填dentist。
(5)考察连词,这个星期天早上我们要去野餐除非那天下雨,故填unless。

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【题目】 Do you know about bio-plastic(生物塑料)?It is a kind of plastic. but it is not the same as normal plastic. Normal plastic is made from chemical materials and takes a very long time to degrade(降解). But bio-plastic is good for the environment. it is made by using bacteria(细菌) to process(加工)natural sources like vegetable oils, corn or sugar. It can degrade more easily.

But there is a problem with bio-plastic. The "food" that bacteria eat is what we eat. This means that bacteria are competing against humans for the same resources.

Now scientists have found a new way to make bio-plasticusing two kinds of bacteria and sunlight. According to Newsweek.

One of the bacteria can use sunlight to produce sugar. The other land eats the sugar and produces polymers(聚合物). Polymers are used to create bio-plastics. The way the bacteria store polymers is similar as humans store fats.

The new way to produce bio-plastic has many advantages. It is 20 times faster than the normal way we produce bio-plastic. Moreover, using these two bacteria saves resources.

The next problem scientists face is that they want to put their tab research into real-world practice. By doing this, bio-plastic made with these two bacteria can be widely produced in the future.

1According to the passage, which is TRUE about bio-plastic?

A.It is bad for the environment.

B.It's made from chemical materials.

C.It is a new kind of bacteria.

D.It can degrade more easily.

2What does the phrase "The food" underlined refer to?

A.Normal plastic.B.Normal bacteria.C.Salty waters.D.Natural sources.

3From the passage, which is the correct order to make bio-plastic?

a. eating the sugar

b. creating bio-plastics

c. producing polymers

d. using sunlight to produce sugar

A.a-d-c-bB.a-d-b-cC.d-a-c-bD.d-c-a-b

4What's the main idea of the passage?

A.A new kind of plastic.B.A new way to produce bio-plastic.

C.A way to store fatsD.A way to produce two kinds of bacteria.

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