Question

You may never connect the words “good” and “eco-friendly”with plastic.It’s time to do a rethink on that as we say hello to hemp(大麻)plastic.Traditionally,plastics have been made from petrochemicals,which are mainly poisonous.Plants,on the other hand,are also a source of cellulose(纖維素),which can be used to make biodegradable (生物所能分解的)plastic.As hemp happens to be one of the richest sources of cellulose,it is only natural that scientists will support its use,considering its ecological benefits.

Hemp plastic is biodegradable and recyclable.If you thought being eco-friendly reduced its solidity,you couldn’t be more wrong.The hard level of hemp plastic can match that of regular plastic.Hemp plastic is resistant to heat;however,the most outstanding feature of a few varieties of hemp plastic is that they are flame resistant too.Finally,if Henry Ford could imagine creating a car with this material,we can perhaps believe that it indeed is“ten times stronger than steel”.

It is a pity that with so many useful qualities,we don’t see hemp plastic being used in our everyday life,the way it ought to be.Hemp plastic can easily take the place of the exiting plastic in products like cell phone chargers(充電器),laptop covers,etc.Currently,hemp plastic is being used to produce audio(音響設(shè)備),video,toys,automobile parts and packaging materials.

Hemp fiber is one of the strongest natural fibers known to us.As scientists keep looking for ways to solve the ecological damage that traditional plastics have caused,here is a material that can be produced to be 100% biodegradable.Hemp plastic is known to be several times durable as compared to polypropylene(聚丙烯)plastic,and it comes without all the health and safety threats,It really has long useful life.

Plastics keep reminding us of the damage that we have done to our planet,all under the excuse of convenience.As hemp products have become a new choice into our daily life,Please take a green plan now and make your effort to protect the environment.

1.Plastics produced in the traditional way are______.

A．harmful	B．made from plants
C．good and eco-friendly	D．biodegradable

2.According to Para.2,hemp plastic_____.

A．is all resistant to flame	B．doesn’t have enough solidity
C．will take the place of steel	D．can be used again after being processed

3.What does the underlined word“durable”mean in Para.4?

A．Very useful of important.

B．Costing little money or less money.

C．Staying in good condition for a long time.

D．Existing in large numbers or in many places.

4.Which aspect of hemp plastic isn’t mentioned in the passage?

A．Features.

B．Production cost

C．Applications.

D．Advantages.

5.What can we know from the passage?

A．Using hemp plastic is inconvenient.

B．People haven’t made the most of hemp.

C．Hemp fiber is a kind of strong man-made fiber.

D．Scientists have already known how to solve ecological damage.

 

Answer 1

【答案】

1.A

2.D

3.C

4.B

5.B

【解析】

試題分析：

1.這是細(xì)節(jié)理解題。根據(jù)Traditionally,plastics have been made from petrochemicals,which are mainly poisonous.故選A。

2.這是細(xì)節(jié)理解題。根據(jù)the most outstanding feature of a few varieties of hemp plastic is that they are flame resistant too.并非所有的都耐火，故排除A；根據(jù)If you thought being eco-friendly reduced its solidity,you couldn’t be more wrong.故排除B；文中只是說(shuō)了它的硬度有時(shí)比鋼還硬，但并沒有說(shuō)它要代替鋼，故排除C；根據(jù)Hemp plastic is biodegradable and recyclable.故選D。

3.這是細(xì)節(jié)理解題。根據(jù)it comes without all the health and safety threats,It really has long useful life.這里說(shuō)的是Hemp plastic比polypropylene(聚丙烯)plastic的壽命長(zhǎng)。故選C

4.這是細(xì)節(jié)理解題。根據(jù)the most outstanding feature of a few varieties of hemp plastic is that they are flame resistant too.故排除A；根據(jù)第三段可以排除C；根據(jù)As hemp happens to be one of the richest sources of cellulose,it is only natural that scientists will support its use,considering its ecological benefits.及全文來(lái)看，一直在說(shuō)Hemp plastic的好處，故排除D，所以應(yīng)選B。

5.這是細(xì)節(jié)理解題。根據(jù)As hemp happens to be one of the richest sources of cellulose,it is only natural that scientists will support its use,considering its ecological benefits.及全文來(lái)看，Hemp plastic還沒有廣泛應(yīng)用到日常生活中。故選B

考點(diǎn)：這是一篇說(shuō)明文。

點(diǎn)評(píng)：本文介紹了麻塑料的利用價(jià)值，它對(duì)于人們的生活和生產(chǎn)都能帶來(lái)益處，對(duì)于人們的生存環(huán)境也是有好處的。這樣的說(shuō)明性文章一般都主旨鮮明,很容易在文中找到答案。做題時(shí)要注意文章的首段和每一段的首句或尾句，因?yàn)樗鼈兺�往就是文章的主題句。