input question: Write a multi-choice question for the following article, with the given choices and answer: Article: Scientists are trying to make the deserts into good land again. They want to bring water to the deserts, so people can live and grow food. They are learning a lot about the deserts. But more and more of the earth is becoming deserts all the time. Scientists may not be able to change the deserts. Scientists think that people make deserts. People are doing bad things to the earth. Some places on the earth don't get much rain. But they still don't become deserts. This is because some green plants are growing there. Small green plants and grass are very helpful to dry places. Plants don't let the hot sun make the earth even drier. Plants don't let the wind blow the earth away. When a little bit of rain falls, the plants hold the water. Without plants, the land can become deserts much more easily. Options: A carrying water B growing food C doing nothing D studying a lot Answer: D studying a lot Question:???
output answer: Scientists are _ to make the deserts into good land again.

input question: Write a multi-choice question for the following article, with the given choices and answer: Article: When did you last see a polar bear? On a trip to a zoo, perhaps? If you had attended a winter activity in New York a few years ago, you would have seen a whole polar bear club. These "Polar Bears" are people who meet frequently in winter to swim in freezing cold water. That day, air temperature was 3degC, and the water temperature was a bit higher. The members of the Polar Bear Club at Coney Island , New York are usually about the age of 60. Members must satisfy two requirements. First, they must get along well with everyone else in the group, this is very important because there are so many different kinds of people in the club. Polar Bears must also agree to swim outdoors at least twice a month from November through February. Doctors do not agree about the medical effects of cold-water swimming. Some are worried about the dangers of a condition in which the body's temperature drops so low that finally the heart stops. Other doctors, however, point out that there is more danger of a heart attack during summer swimming because the difference between the air temperature and water temperature is much greater in summer than in winter. The Polar Bears themselves are satisfied with the benefits(or advantages) of cold-water swimming. They say that their favorite form of exercise is very good for the circulatory system because it forces the blood to move fast to keep the body warm. Cold-water swimmers usually turn bright red after a few minutes in the water. A person who turns blue probably has a very poor circulatory system and should not try cold-water swimming. The main benefits(or advantages) of cold-water swimming are probably mental . The Polar Bears love to swim year-round; they find it fun and relaxing. As one 70-year-old woman says,"When I go into the water, I pour my troubles into the ocean and let them float away ." Options: A you are healthy if cold-water swimming turns your skin color blue B cold-water swimming causes more heart attacks in summer than in winter C cold-water swimming can make the body temperature dangerously high D Polar Bears are bears swimming in freezing water Answer: B cold-water swimming causes more heart attacks in summer than in winter Question:???
output answer: According to the passage, some doctors believe it is true that _ .

input question: Write a multi-choice question for the following article, with the given choices and answer: Article: In America, people change jobs ten times during their lives. They change their homes eleven times. Americans like change because they think it _ their lives. In China, some people, of course, don't like change. They want life to be predictable . They want to do the same things every day and to see the same people every day. When something changes, it makes them feel uncomfortable, like a child who can't go to sleep unless all his toys are in their proper places. But can't you see there are many changes in China? People are healthier and they are living longer. People have more money, more food and they are better educated . Without change, our lives would be very boring. It would be like listening to the same song over and over again. Change is a big part of life and we all change in small ways every day --the young get stronger, the old get weaker; we meet new friends; we find new interests. Change is good for China and it will be good for you, too. Options: A Nine. B Ten. C Eleven. D Twelve. Answer: B Ten. Question:???
output answer: How many times do people in American change their jobs during their lives?

input question: Write a multi-choice question for the following article, with the given choices and answer: Article: Mark Black is my good friend. He is English. He has a yellow bike. His bike number is 9075. His mother has a black car. The number is CA3566. His father has a black car, too. The number is CA3567. Options: A yellow B black C red D white Answer: B black Question:???
output answer:
His mother's car is _ .