单选题Because it is not a serious problem, we are not necessary to take strict measures against the student.A we not needB not necessary for usC it being unnecessaryD it is not necessary for us

We can infer that the plumbing ______ at that time.

A. cost little

B. was more expensive than a water system

C. was too expensive for every family to afford

D. was not necessary

-Can you tell us why you think this makes good business sense to you? -We've been doing quite well on our own and we could probably survive like this for quite a few more years to come, but if we really want to take it to the next level, ____________.

：A the board of directors needn't take the present economic situation into consideration ;

B it's not necessary for us to develop the company any more ;

C we are going to have to consider finding more investors

The problem is so serious that the situation is out of control.

A.We’ve got to set up a police line and ask for aid

B.We’ve got to ask for back-up from the PLA and police

C.We’ve got to report to the superiors rapidly and ask for back-up

D.We have informed the authorities to take precautionary measures.

It is necessary that measures _____ taken right now.

A: be

B: must be

C: will be

D: can be

We can infer from this passage that______.

A. people cannot sent visible information until 19th century

B. we cannot communicate without sound

C. the ways of communication are similar in different countries

D. in ancient time, enough people is necessary to send messages over distance

A、condition

B、invention

C、pollution

D、position

B

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 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 carrying 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, a 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 is also applies 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 realise just how much unnecessary material are collecting. We need to face the wastefulness of our consumer culture, but we have a mountain to climb.

61. What does the underlined phrase “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.

In the last paragraph，the author mainly intends to

A．list the necessary changes we ought to make

B．advise US to make any necessary changes

C．explain what changes can bring

D． explain the process of making changes