Ask someone what they have done to help

题型:阅读理解

问题:

Ask someone what they have done to help the environment recently and they will almost certainly mention recycling.Recycling in the home is very important of course.However, being forced to recycle often means we already have more material than we need.We are dealing with the results of that over–consumption in the greenest way possible, but it would be far better if we did not need to bring so much material home in the first place.

The total amount of packaging has increased by 12% between 1999 and 2005.It now makes up a third of a typical household’s waste in the UK.In many supermarkets nowadays food items are packaged twice with plastic and cardboard.

Too much packaging is doing serious damage to the environment.The UK, for example, is running out of it for burying this unnecessary waste.If such packaging is burnt, it gives off greenhouse gases which go on to cause the greenhouse effect.Recycling helps, but the process itself uses energy.The solution is not to produce such items in the first place.Food waste is a serious problem, too.Too many supermarkets encourage customers to buy more than they need.However, few of them are coming round to the idea that this cannot continue, encouraging customers to reuse their plastic bags, for example.

But this is not just about supermarkets.It is about all of us.We have learned to associate packaging with quality.We have learned to think that something unpackaged is of poor quality.This is especially true of food.But it is also applied to a wide range of consumer products, which often have far more packaging than necessary.

There are signs of hope.As more of us recycle, we are beginning to realize just how much unnecessary materials are collected.We need to face the wastefulness of our consumer culture, but we have a mountain to climb.

小题1:What does the underlined phrase “that over-consumption” refer to?

A.Using too much packaging.

B.Recycling too many wastes.

C.Making more products than necessary.

D.Having more material than is needed.小题2:The author uses figures in Paragraph 2 to show ___________.

A.the tendency of cutting household waste

B.the increase of packaging recycling

C.the rapid growth of supermarkets

D.the fact of packaging overuse小题3:According to the text, recycling ___________.

A.helps control the greenhouse effect

B.means burning packaging for energy

C.is the solution to gas shortage

D.leads to a waste of land小题4:What can be inferred from Paragraph 4?

A.Unpackaged products are of bad quality.

B.Supermarkets care more about packaging.

C.It is improper to judge quality by packaging.

D.Other products are better packaged than food.

考点:科教类阅读
题型:阅读理解

淋巴干细胞发育成T淋巴细胞的刺激因子是()

A.集落刺激因子

B.特异性抗原

C.调理素

D.胸腺激素

E.促淋巴细胞生成素

题型:阅读理解

细胞水肿最常见的器官是()。

A.肝、心、肾

B.胃、小肠

C.脾、胰

D.子宫、卵巢

E.膀胱、直肠

题型:阅读理解

如图所示,一轻质弹簧竖直放置在水平地面上,下端固定。弹簧原长为20cm,劲度系数k=200N/m,现用竖直向下的力将弹簧压缩到10cm后用细线栓住,此时在弹簧上端放置质量为0.5kg的物块。取g=10m/s2。在烧断细线的瞬间,下列说法正确的是

[ ]

A.物块的加速度为30m/s2,方向竖直向上

B.物块的加速度为10m/s2,方向竖直向下

C.物块的加速度为零

D.物块的速度为零

题型:阅读理解

在64位高档微机中,一个字长所占的二进制位数为( )。

A.8

B.16

C.32

D.64

题型:阅读理解

股骨颈骨折的病理基础是()。

A.股骨颈部细小

B.处于疏松骨质和致密骨质交界处

C.负重量大

D.老年人肝肾不足,骨质疏松

E.血液供应差

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