题目内容
You may not be aware, but digital currency (货币) is a big part of the Internet world. QQ Coins can buy you accessories (配饰) for your QQ images. More importantly, a new digital currency, Bitcoin, is bringing the world’s commerce online.
If you’re traveling, you can spend Bitcoins at restaurants and hotels listed at BitcoinTravel.com. In China, Bitcoins can be used to buy goods at about 134 online shops on Taobao. And at a café named 2nd Place in Beijing, you can even buy fresh coffee with Bitcoins.
So what makes Bitcoin so attractive to investors?
First of all, the Bitcoin system is not controlled by anyone. One central authority cannot make policies to change the value of Bitcoins. The fixed amount of Bitcoins also means they cannot lose value through inflation(通货膨胀), as all forms of paper money have done over time.
In addition, accounts in the Bitcoin system are anonymous and transparent. Users can set up an account easily and track every Bitcoin. All of these features seem to make Bitcoins immune(有免疫力的) from loss, but that is not entirely true.
“The value of Bitcoins can vary wildly as no central government makes the price of them steady. If the value drops suddenly, investors cannot get any compensation(赔偿),” Zhao Qingming, a senior researcher at China Construction Bank, told China Economic Weekly. And Bitcoins, unlike company shares, are not backed by any tangible funds, which also adds to their risk.
While China will not recognize the digital currency anytime soon, Xinhua said, lawmakers and officials at a hearing on Nov. 18 in the US made positive comments about Bitcoin.
Ben Bernanke, outgoing chairman of the Federal Reserve, told the Washington Post that “these types of creations, such as Bitcoin… may hold long-term promise, particularly if its system promote a faster, more secure and more efficient payment system.”
1.Bitcoin is ______.
A. actually exactly like QQ Coins
B. only used online
C. a new currency used both online and in real life
D a country’s new digital currency.
2.We can use Bitcoin to buy the following things except ______.
A. online goods
B. goods at 134 online shops on Taobao
C. books in physical shops
D. coffee at a café named 2nd Place
3.What is the disadvantage of Bitcoin?
A. the value of it can rise and fall wildly.
B. It cannot lose value through inflation.
C. Every bitcoin in your account can be followed.
D. It can even be used at some specific restaurants and hotels.
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Antibiotics, insulin, organ transplantation, HIV treatments and heart-bypass surgeries—it reads like an A to Z of medical progress. But the major progress has something in common: they were all developed and tested by using animals. Actually, animals are used for research in a variety of settings. Whether or not humans should use animals for testing purposes, however, is a controversial subject.
Animal testing allows researchers to develop new medicine and treatments, advancing the field of medicine and improving the health of society. For example, many drugs used to treat or prevent cancer, HIV, diabetes, etc, have resulted from tests performed on animals. Many advocators of animal testing support the practice for this reason, even if they do not support testing, cosmetics or other non-essential substances on animals. No one chooses to use animals where there in no need. In fact, animal research has contributed to 70 percent of Nobel prizes for physiology or medicine.
Animal testing also enables scientists and researchers to test the safety of medicine and other substances with which humans have regular contact. Drugs, for example , may create significant risks to humans, so testing them on animals first gives researchers a chance to determine their safety before human trials are performed. While scientists understand the differences between humans and animals, the similarities are considered significant enough to produce relevant data that they can then apply to humans. This, animal testing reduces harm to humans and saves lives, not only because the exposure to risky substances is minimized, but because some new medicine and treatments have positive effects on humans’ overall quality of life.
However, a significant number of animals are harmed or die as a result of experiments and testing. Unfortunately, many of the substances used on animal subjects never receive approval for human use or consumption. Those who oppose animal testing consider this a very important point , because saving humans from suffering is no excuse for the death of laboratory animals. Opponents also argue that animals are dissimilar enough from humans to make the results of animals tests unreliable. Related criticism is that testing causes stress in animals, meaning that they do not react to experimental substances in the same way that they might in natural circumstances, making the results of experiments less valid
Using animals as research subjects is also expensive because they require food, shelter, care and treatment in addition to the costs of experimental substances. Long-term or multi-stage tests can increase the costs of the practice as well. The actual price paid for animals is also worth considering. In this respect, researchers take on an additional burden.
Title | Should Humans Experiment on Animals? | |
Introduction | Many __1.___ have been made on medical research by using animal testing | |
__2.______ about animal testing | People _3._____ up for it | New medicine and treatments can be developed. Advancements in the field of medicine and _4._________ in humans’ health can be made. Researchers can __5._____patients the safety of new treatments and medicine. Scientists can collect research data in ____6.______ with humans’ medical problem. Harm done to humans will be reduced to the 【小题7___ and more lives will be saved. |
People opposing it | The experiments may put many animals’ lives at _7._______. Experiments may not ____8.____ produce reliable results because animals do not react normally under stress. Researchers will be __9._______ with the extra costs of animals and their care. | |