摘要:8.It is a pity that the musician when he was quite young.

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A cheap drug that can stop bleeding in people recently injured in an accident could potentially save the lives of tens of thousands worldwide, a new study says.
Researchers studied the effects of tranexamic acid (凝血酸), or TXA, in more than 10,000 injured people in 40 countries who received the drug within 8 hours of being injured. The study was published in the medical journal Lancet. Doctors found that patients who got TXA had a 15percent lower chance of dying from hemorrhage than those who didn’t get it . They also had a 10 percent lower chance of dying from any other cause, including organ failure and a head injury. The study was paid for by the British government.
The drug is commonly used in wealthy countries during elective surgeries(外科手术) to stop bleeding , but isn’t used for accident victims. TXA is off-patent and made by many companies. It costs about $4.5 per gram, and a typical dose is two grams. It is usually given via an injection(注射) and would be relatively easy to introduce, even in poor countries, experts said.
Previous tests of the drug regarded its use in elective surgeries, such as heart operations, but this was the first study to test the drug on accident victims. Doctors were worried it might increase side effects such as blood clots (凝块)in the heart and lungs, strokes, or heart attacks. There was no evidence of that in the Lancet study, though the authors said it was possible they might have missed some of these incidents.
For people between 5 and 45, accidents are the second leading cause of death worldwide after AIDS, and about 600,000 injured patients bleed to death every year. Experts estimated that if TXA were readily available, between 70,000 and 100,000 lives a year could be saved. Though the drug wasn’t tested on children , experts said it would almost certainly work with them as well.
【小题1】The underlined word” hemorrhage” in Paragraph 2 probably means ________

A.serious illnessB.heart diseaseC.heavy bleedingD.lack of drug
【小题2】What can we learn about TXA from the passage?
A.It can only be made in EnglandB.It was only used in operations before
C.It is a patented drugD.It is mainly used in poor countries
【小题3】Doctors were worried about using TXA because ________
A.a lot of patients died unexpectedly after using it
B.it has no treatment effect on patients
C.it can cause blood clots or stroke
D.they hadn’t used it on accident victims before
【小题4】 What do we know from the last paragraph?
A.It is a pity that TXA wasn’t widely used on injured patients before
B.Tests have proved that TXA can be used on children
C.People between 5 and 45 should be injected with TXA every year
D.Accidents are the first leading cause of death worldwide.

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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(纤维素),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(充电器),laptop covers,etc.Currently,hemp plastic is being used to produce audio(音响设备),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.
【小题1】Plastics produced in the traditional way are______.

A.harmfulB.made from plants
C.good and eco-friendlyD.biodegradable
【小题2】According to Para.2,hemp plastic_____.
A.is all resistant to flameB.doesn’t have enough solidity
C.will take the place of steelD.can be used again after being processed
【小题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.
【小题4】Which aspect of hemp plastic isn’t mentioned in the passage?
A.Features.B.Production costC.Applications.D.Advantages.
【小题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.

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