Our waste recycling project ________ a lot of...

Our waste recycling project ________ a lot of investigation and paperwork had been done by the end of last term.

A．involved　     　　 B．to involve

C．being involved　     D．involving

高三英语单项填空中等难度题查看答案及解析

Around 45% of plastic waste is recycled annually in the UK and is on the increase. However, one of the problems with present plastic recycling methods is that you end up with a lower-quality plastic with worse properties （特性）than the original. This means that plastic drink bottles cannot simply be recycled into new drink bottles continuously, but instead are used for other lower-grade products like park benches.

Now, British scientists have developed a new method of chemical recycling. They use lower temperatures and more environmentally-friendly starting chemicals than previous methods to turn plastics back into their constituent chemical molecules （分子）.In this way, they can be used to make new plastics of the same quality as the original.

"Most plastic is now recycled using mechanical methods, where they are transformed into liquids before being made into something new," said a professor named Matthew Jones. "The problem is, melting plastic changes its properties and reduces the quality. Out method of chemical recycling overcomes this problem. Then plastics can be used all over again without losing any properties?"

The researchers are recycling some kinds of plastics, including plant-based PLA, a plastic used for food packaging and PET, which is used for drink bottles. So far, the technology has only been demonstrated on a small range. However, scientists are now working to produce larger quantities of starting chemicals.

"There is no single solution to the problem of plastic waste — the approach has to be a combination of reducing, reusing and recycling. Our method of chemical recycling could allow carbon to be recycled endlessly rather than digging more up from the ground in the form of fossil fuels, or letting it into the atmosphere as a greenhouse gas," said Dr. Paul McKeown from the University of Bath.

1.What is the problem with the present plastic recycling?

A.The quality of recycled plastics declines.

B.Plastic drink bottles cannot be recycled.

C.The amount of plastic waste is increasing.

D.Recycled lower-grade products sell badly.

2.How do scientists recycle plastic waste with the new method?

A.By transforming it into fuels.

B.By heating it into liquid state.

C.By keeping its original properties.

D.By changing its molecule structure.

3.What can we learn from what Dr. Paul McKeown said?

A.Fossil fuels are endless resources.

B.The plastic waste problem has no solution.

C.Recycled carbon leads to greenhouse gases.

D.The chemical recycling is environment-friendly.

4.In which part of the website can we find the text?

A.Business. B.Tech & Science.

C.Lifestyle. D.Arts & Culture

高三英语阅读理解简单题查看答案及解析

Recycling, in its broadest ______, refers to the remaking of waste products and other used materials for practical purposes.

A. sight　　　 　　 B. sense　　　 　 C. size　　　 　　　　 D. Space

高三英语单项填空中等难度题查看答案及解析

While the police have already done a lot of investigation, much evidence _____________.

A．is remaining to be confirmed                             B．remained to be confirmed

C．is remained to be confirmed         D．remains to be confirmed

高三英语单项填空简单题查看答案及解析

——Why are you so upset, Doctor White?

——The project didn’t 　　　　 as we had expected. It was such a waste of time!

A. settle down　　 B. work out

C. come about　　 D. turn up

高三英语单项填空中等难度题查看答案及解析

As students, we must ________ on our studies and work hard instead of fooling around.

A.investigate B.memories C.approach D.concentrate

高三英语单项填空简单题查看答案及解析

．________ UN official is said to visit our province next month to investigate ________

problem of housing and education．

高三英语单项填空简单题查看答案及解析

Putting waste in different bins made it easier for it______．

A．to recycle            B．recycles               C．recycling             D．to be recycled

高三英语单项填空简单题查看答案及解析

Get involved with our research

Some of our research projects rely on the generosity of people like you. Whether it’s using your home PC, taking part in a clinical trial, or simply volunteering your time for a study, you may be able to contribute to some of the ground-breaking projects which make the University of Oxford a world leader in research. Watch this space for ways in which you could get involved.

Seeking poor sleepers for insomnia research

Trouble sleeping? Researchers from the Sleep & Circadian Neuroscience Institute at the University of Oxford are evaluating different interventions aimed at improving sleep. We are looking for poor sleepers between the ages of 18 and 65. Participation will involve spending overnights in the sleep laboratory at Oxford, monitoring your sleep/wake cycle, and completing computerised tasks. Depending on the study you volunteer for, you will either undergo an online self-help treatment programme or lab-based non-invasive brain stimulation sessions prior to bedtime. You will be reimbursed for your time.

If you are interested in taking part or would like more information, please contact the research team directly at insomnia@ndcn.ox.ac.uk

Volunteers with lazy eye wanted

We are looking for volunteers with a history of lazy eye to take part in our brain scanning study on how binocular(双眼的) vision relates to brain chemistry. We are looking for healthy, fluent English volunteers aged 18-45 with a history of lazy eye. You will also be asked questions about your medical history to check your suitability for an MRI scan.

Call 01865 223622 for more information.

Oxford Vaccine Group

The Oxford Vaccine Group is an independent multi-disciplinary clinical trials and epidemiology group. OVG works towards the goal of developing new and improved vaccines for the prevention of infection in adults and children, enhancing the understanding of immunity and studying the epidemiology of infectious diseases.

To find out which research projects are currently recruiting volunteers, please see the OVG website or email info@ovg.ox.ac.uk .

Oxford Experimental lab for the Social Sciences

The Oxford Internet Institute, together with the Business School, is recruiting individuals to participate in computer-based experiments involving online surfing behavior as well as economic and political decision-making. We pay our subjects well, there are no special skills required and you don’t have to be a student to take part!

Contact us at socialscience.study@ox.ac.uk for more information.

1.What is the main purpose of the passage?

A.To offer medical help to patients

B.To look for experienced researchers

C.To introduce new research programs

D.To recruit volunteers for research projects

2.The goal of OVG is to _______.

A.carry out clinical trials

B.produce vaccines against viruses

C.learn more about the immune system

D.study the occurrence of infectious diseases

3.You can finish the experiment on your home PC if you join __________.

A.Oxford Vaccine Group

B.Insomnia research group

C.Oxford Experimental lab

D.Brain Scanning study group

高三英语阅读理解中等难度题查看答案及解析

A lot of research and studies have shown that Trench oil, taken out from kitchen waste, ______ the increase of cancers.

A appeals to    B. attends to      C. contributes to    D. devotes to

高三英语单项填空简单题查看答案及解析