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d the problem. She cut the legs off the bed.46. Mr. white is _____ A. ill in mind(精神) B. crazy about sports C. interested in his bed D. afraid of someone in his house47. The psychiatrist works as a _____ . A. teacher B. volunteer C. doctor D. listener48. The psychiatrist told Mr. White to ________ . A. ask his wife for help B. visit him a lot more C. cut the legs off the bed D. believe his abilities49. Mr. White became all right with the help of ______ .A. the psychiatrist B. his wife C. his bed D. a working man50. Which of the following statements is TRUE?A. Mr. White is in a good health because he exercises every day.B. The psychiatrist made a lot of money by helping Mr. White.C. Mr. White has a smart wife who is very helpful. D. Mr. White went mad before he went to see the psychiatrist. (C)We have always been interested in the moon. 2000 years ago people already knew it moved around the earth and where it would be in the sky at different times of the year. At that time, everything about the moon was learned by watching it carefully in the sky. When scientists could use telescopes to study the moon more closely, their ideas began to change. They could see the moon was made of rocks. Most scientists thought moon rocks would be different from those on Earth. This was because they believed the moon had once been a planet that had been caught in the earth39。s gravity (引力) millions of years earlier. In 1969 moon rocks were finally brought to the earth and studied. Much to their surprise, scientists found that, except for water, the moon and the earth were made of the same things. Once again new ideas were needed for this new information.After years of study, most scientists now think that the moon was once part of Earth. They believe very early in its history, maybe 4 million years ago, something about the size of Mars hit Earth. This sent billions of rocks into space around our planet. These rocks slowly joined together and after many years became the moon.In the future, even though our ideas about the moon may change again, we will still be interested in it. 51. Now, we’re sure ________________A. Moon rocks are quite different from those on Earth.B. Moon was once a part of Earth.C. Moon moves around Earth and it’s the only satellite of Earth.D. Moon was once a planet caught in Earth’s gravity.52. In 1969 there is a big event, that is __________.A. humans Found no water in Moon rocksB. scientists made out a modern spaceshipC. scientists invented an advanced telescopeD. humans left their footprints on Moon 53. What does the writer want to tell us in the passage? A. Why people are interested in the moon. B. How ideas about the moon have changed over time. C. Where the moon came from in the past. D. That people have finally learned the truth about the moon.54. Before 1969 most scientists thought the moon was ________. A. part of the earth billions of years earlier B. older than the earth C. a planet caught by the earth39。s gravity1