Look closely at ,your hands-are they clean? It doesn't matter how many times you was your hands. They're still crowded with microbes, which are also called "germs" or "bacteria". Microbes are everywhere. But don't worry-most microbes don't harm you. and many actually help you stay alive. Now, scientists say the microbes that live on our hands could be used in a surprising way: fighting crime. When police visit the scene of a crime, they often look for fingerprints to try to identifythe criminal. But according to a recent study, investigators could even use microbes to help break a criminal case. Every person has his or her own set of microbes that live on their hands, according to scientists at,the University of:Colorado. That means the mix of different kinds of microbes on everybody's hand is unique-much like one's fingerprint. The scientists wanted to know whether this microbe mix could be used as a new kind of fingerprint-especially in a crime scene where fingerprints might be hard to find. And policemen use forensics such as studying fingerprints to identify the criminal. "Microbe fingerprints are harder to hide," said Noah Fierer, one of the scientists. "You can't sterilize(......) a surface just by wiping it off. " His team compared the bacteria on the hands of 273 people with the bacteria found on each person's computer keyboard. For the study, the keyboards had been used only by the people who were being tested. The study showed that the mix of microbes from each per- son's hands matched the mix of microbes on that person's keyboard. The scientists were easily able to tell the 273 people apart-just by looking at their keyboards. But there are a lot more than 273 criminals. Other scientists wonder whetherthe microbe fingerprint can really be that useful. Fierer agrees that scientists have a lot more work to do before the microbe fingerprint will be a useful tool. We can learn from the passage that _ . A) your microbes may give you away B) scientists will come to a clear conclusion soon C) many scientists think microbe fingerprints useless D) the microbe fingerprint has been used in many cases
A
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Discover the beautiful, silent, white world or Antarctica on the holidays of a life-time.Head South to Buenos Aires and then transfer to the world's most southern city, Ushuaia.From there, it's about 1,000 kilometers on a special icebreaker ship to the freezing temperature of Antarctica. Getting off the ship and taking your first step onto the ice, you will imagine what it is like to be an explorer.Meet penguins sitting on their eggs, or see an Antarctic seal that lives all the year round on the ice.But do not get closer than five meters to any animal, in case you frighten it or make it angry. The friendly crew of the ship will look after you as you explore the ice continent. We promise you fantastic meals and a comfortable bed -- you sleep in a four-person cabin -- as well as many special treats.If you don't think it is cold enough, try the ''polar plunge" -- jump into a special hole dug in the ice and dip your head under the water.You can then jump into a hot bath and if you succeed we will give you a certificate. After you wake up for the first time in the Antarctica you will understand why everybody who goes there falls in love with the place.The scenery is different every day because the sea ice is always moving. Our ships travel to Antarctica from November to March -- phone today and book your dream holiday! How should you behave when you see animals on Antarctica? A) Don't take photos with them. B) Sit on the legs of the penguin. C) Don't watch them too near. D) Never make them angry.
(Answer)
C
Ques: It was in the Victorian Era that the novel became the leading form of literature in English. Most writers were more concerned to meet the tastes of the middle class. The best known works of the period included the works of Charles Dickens and the Bronte sisters and others. Charles Dickens came on the literary scene in the 1830s. Dickens wrote vividly about London life and the struggles of the poor. Most of his works were written in a very humorous style, which was popular with readers of all classes. The Bronte sisters were English writers of the 1840s and 1850s. They began to write from early childhood. In 1846 they published the first book at their own expense as poets; however, their book attracted little attention, selling only two copies. Then the sisters turned to writing novels, each producing a novel in the following year. An interest in rural matters and the changing social and economic situation of the countryside may be seen in the novels of Thomas Hardy and a number of others. Literature for children developed as a single style. Some works became well-known, such as those of Lewis Carroll and Edward Lear. Adventure novels were written for adults but are now generally grouped in the list for children. Helen Beatrix Potter was an English author at the end of the Victorian Era, best known for her children's books, which featured animal characters. In her thirties, Potter published the highly successful children's bookThe Tale of Peter Rabbitin 1902. This text is mainly about _ . A) literature in the Victorian Era B) writing styles in the Victorian Era C) famous works in the Victorian Era D) the importance of literature in the Victorian Era
Ans: A
Question: WASHINGTON -- President Obama brought together the leaders of Japan and South Korea to discuss cooperation on containing North Korea and its nuclear weapons programs. Japan and North Korea have had tense relations over unresolved issues, some of them dating back 100 years. The three leaders emphasized the importance of cooperation in dealing with North Korea. The meeting took place Tuesday in the Hague, after a twoday nuclear security summit. President Obama praised South Korean President Park Geunhye and Japanese Prime Minister Shinzo Abe for overcoming their differences to discuss a serious threat to regional peace. He emphasized the importance of cooperation on the North Korean nuclear issue. Obama said the three discussed steps to deepen diplomatic and military cooperation, including joint military exercises and missile defense against Pyongyang. He said further discussions would take place next month, during his visits to Seoul and Tokyo. The South Korean president stressed the importance of a united response to North Korea, but also called on the North to choose a peaceful path. "I sincerely hope that this meeting will offer a chance for us to reconfirm our trilateral coordination and strengthen the cooperation on the nuclear front," said Park. Japanese Prime Minister Shinzo Abe agreed. "Particularly it is extremely important that we were able to confirm close cooperation among Japan, the United States and the Republic of Korea on the issue of North Korea, the three countries who would like to cooperate so that North Korea will be able to take a positive position with regard to nuclear and missile issue," said Abe. Japan and South Korea have several unresolved issues, including Japan's refusal to apologize again for crimes committed 70 years ago. Former U.S. diplomat Richard Armitage told an audience this week that painful historic injustices take a long time to heal, and that it is in Japan's interest to continue apologizing for as long as necessary. "There is a historical record of enormous... According to the passage, what is the unsolved issue between Japan and Korea? A) To build a nuclear front against North Korea. B) To apologize for crimes Japan committed during the Second World War. C) To join a military exercise among three countries. D) To confirm close cooperation between the two countries.
Answer:
B