Question

【題目】 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（細菌） 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-plastic－using 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.

【1】According 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.

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

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

【3】From 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

【4】What'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.

Answer 1

【答案】

【1】D

【2】D

【3】C

【4】B

【解析】

短文大意：本文是科普類閱讀，介紹了新型生物塑料的優(yōu)點、作用及制作方法。

【1】題意：根據(jù)文章，關(guān)于生物塑料，哪個是正確的？考查細節(jié)理解。根據(jù)“It can degrade more easily它更容易降解”可知，It can degrade more easily說法正確，故選D。

【2】題意：劃線部分的“The food”是指什么？考查詞義理解。Normal plastic正常的塑料；Normal bacteria正常的細菌；Salty waters咸水；Natural resources天然資源。根據(jù)“The "food" that bacteria eat is what we eat. This means that bacteria are competing against humans for the same resources細菌吃的食物就是我們吃的東西。這意味著細菌正在與人類爭奪同樣的資源”，可知Natural resources符合題意，故選D。

【3】題意：在這一段中，哪一個是制造生物塑料的正確順序？考查細節(jié)排序。a. 吃糖；b . 制造生物塑料；c. 生產(chǎn)聚合物；d. 利用陽光生產(chǎn)糖。根據(jù)第四自然段：先是一種細菌利用陽光產(chǎn)生糖，然后然后另一塊地吃糖，產(chǎn)生聚合物；最后聚合物被用來制造生物塑料，可知d-a-c-b順序正確，故選C。

【4】題意：這篇文章的主旨是什么？考查主旨理解。根據(jù)主題句“Now scientists have found a new way to make bio-plastic－using two kinds of bacteria and sunlight科學家發(fā)現(xiàn)了一種制造生物塑料的新方法”，結(jié)合短文內(nèi)容，可知介紹的是新型生物塑料的優(yōu)點、作用及制作方法，A new way to produce bio-plastic（一種生產(chǎn)生物塑料的新方法）符合題意，故選B。