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I'm taking a test and have to guess the right answer to the question after the article. Article: BERLIN (AP)----A tiger escaped its enclosure at Cologne Zoo in western Germany on Saturday and killed a female keeper before being shot dead by the zoo's director, police said. The tiger slipped through a passage between the enclosure and a neighboring storage building, where it fatally attacked the 43-year-old keeper, said police spokesman Stefan Kirchner. "It appears the gate wasn't properly shut," Kirchner told The Associated Press. The zoo was evacuated and a SWAT team was called in, police said.But before it arrived, the zoo's director managed to kill the tiger by climbing onto the storage building and shooting it through a skylight using a rifle. Kirchner said it was unlikely that members of the public had witnessed the incident. "This is the darkest day of my life," the zoo's director, Theo Pagel, was quoted as saying by Cologne newspaper Express. The paper said on its website that the Siberian tiger was a 4-year-old male called Tltai that came to Cologne Zoo from an animal park in England.In November it fathered three cubs with a 7-year-old Siberian tiger called Hanya, according to the zoo's website. Police said the zoo reopened after Saturday's incident, which occurred around noon.However, a planned late-night opening of the zoo has been canceled. Cologne Zoo is one of the oldest in Germany.It was founded in 1860 and houses some 10,000 animals consisting of more than 700 different species. Question: According to the police, what was the direct reason for the incident? Options: A: The zoo keeper was a new hand. B: A gate was not closed appropriately. C: The zoo had neglected the secret passage. D: It was very dark when the incident happened.
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B

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I'm taking a test and have to guess the right answer to the question after the article. Article: "Mark Twain" was the name used by Samuel Langhorne Clemens (1835~1910) when he wrote books.His father was a lawyer,but a poor one,who lived in Florida,Missouri.The family was so poor that Samuel did not receive much teaching.He had to learn all that he could from the people whom he met.His father died when he was very young,and then there was even less money than before. Many of the men in this part of America worked in the ships on the great Mississippi River,and he did this himself at one time (1857). Where did he find the name "Mark Twain"? It came from the great river itself.It was part of one of the cries used by men who worked in the ships.When a man called "By the mark twain!" he meant that the river was "two marks deep" there,that is to say,six feet deep ( "Twain" is an old form of the word "Two".) Samuel Clemens often heard these words when he was young,and he used them as a pen name all his life. During his work on the Mississippi he met travelers of all kinds,and this helped him a great deal when he started to write.But the number of travelers became smaller when war started in America in 1861.Many of the great ships on the river stopped work.Samuel left then and went to Nevada with his brother,who was at that time Governor of Nevada.There,near the town of Carson,Samuel became a gold miner,but he never made much money at the time.He soon saw that life in the gold mines was not for him.He also tried writing for the newspapers in Nevada,and this seemed more hopeful.He found that he could write. He went to Europe in 1867 and visited France and Italy.In 1870 he married Olivia Langdon,and two years later he was spending nearly all his time writing.Among his books is his own story (1908). He is now always known as Mark Twain,and many people do not even know that his family name was Clemens.He traveled in America and in England,and went to Oxford in 1907.He was one of the great American writers of the time,and could make his readers laugh--a thing which few writers can do.He died in 1910. Question: According to the writer of the passage,a good writer could _ . Options: A: write a lot for his readers B: make a lot of money for his family C: cause his readers to laugh D: travel everywhere he wanted
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C

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I'm taking a test and have to guess the right answer to the question after the article. Article: Does stress cause gray hair? Many people believe that tension and stress can cause your hair to lose its color.In fact,it is an old wives tale that being upset all the time can result in premature graying.Here is a closer look at this situation and why some believe that this old wives tale could be true. As one ages,the hairs on the head also age.In fact,just about everything on the human body begins to show signs of wear and tear after a while.The joints wear and become stiff and skin wears and becomes wrinkled.Hairs on the head grow and eventually die.They are replaced,but in the process something else happens. When new hairs are replaced,the color or pigment is also added to them.However,as one ages,this pigment becomes less and less available.At first,hairs will have a limited amount of pigment and they will appear to be grayish in color.In time,they will lose all of their pigment and will be white.Many things are known to cause graying.and genetics is a very powerful factor.If one of your parents turns gray at an early age,there is a good chance that you will too.Some people begin the graying process in high school,while others may be over the age of forty. Constant worry and tension can have many harmful effects on the human body.It is a known fact that stressful times can cause one to suffer hair loss.It would make sense that if it can cause these problems,perhaps it also may contribute to graying.However,there is no sound evidence to support this. On the other hand,many medical professionals believe that there may be a link:between graying and a constant state of anxiety or tension.Does stress cause gray hair? There is no scientific evidence to support the theory,but it is best to avoid stressful situations. Question: From the passage we can infer that _ . Options: A: stress causing gray hair is still in question B: gray hair has nothing to do with tension. C: stressful situations can be of benefit. D: sound evidence has been found.
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A