题目

Getting paid to stay in bed all day sounds pretty good, but what if someone pays you $23,000 to stay in bed for two months? That’s the deal that a medical research team in France is offering to 24 volunteers.The researchers are looking for volunteers to help them study the effects of weightlessness (失重状态) on the human body and find ways to stop problems. Lying in bed isn’t exactly the same as being weightless, but the effects are alike. When astronauts spend a long time in an environment with no gravity (重力), their bodies change in many ways. After a couple of months, their hea下图是“某年4月份的某日天气系统的垂直剖面图”，其中甲（110°E，40°N）、乙 （120°E，30°N）是近地面的两地点，读图完成7～8题。 7．下图中能正确表示控制甲、乙两地的天气系统是    (    ) 8．甲、乙两地在此天气系统影响下，天气状况最可能是    （    ）    A．甲地炎热干燥；乙地晴朗少云，气温日较差小     B．甲地晴朗少云，气温较低；乙地多狂风暴雨     C．甲地此时多西南风；乙地此时多东北风 D．甲地沙尘漫天，大气能见度差；乙地阴雨连绵