问题
单项选择题 A1/A2型题
剧烈运动引起中性粒细胞的暂时增加，其主要原因是（）
A.神经兴奋
B.血管收缩
C.骨髓刺激
D.体内白细胞重新分布
E.骨髓增生异常
答案
参考答案：D
解析：剧烈运动引起中性粒细胞的暂时增加，主要是由于循环池和边缘池的粒细胞重新分布所致。
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剧烈运动引起中性粒细胞的暂时增加，其主要原因是（）
A.神经兴奋
B.血管收缩
C.骨髓刺激
D.体内白细胞重新分布
E.骨髓增生异常
参考答案：D
解析：剧烈运动引起中性粒细胞的暂时增加，主要是由于循环池和边缘池的粒细胞重新分布所致。
When I was six, my mother placed me in a 36.________ school. For the next nine years, I 37.______ slept in a room that 38.______ less than 30 other kids in it. So, when I was promoted to senior at the high school for my39.___ year there, I had the greatest 40._____ of rooming with just one other classmate, and the added feature of a semi-private bathroom. We seniors also had the feature of walking around the 41._____ in special hats, we called senior bonnets, so all the other kids would know we were the 42._____ in the high school. As seniors, we frequently went on field 43._____ outside the campus, including city museums, city hall , colleges and theatres. The highlight was a senior class trip to Washington, D.C., 44.______ we sat in on a session of Congress, 45.______ the monument and many other government sites around the city. Another 46.____ of being seniors was that many of us on athletic and other extra-curricular teams were elected to high ranking for the year. I had the honor and pleasure of47._____ captain of our state championship swim team, while my roommate was voted48.______ of the drama club. 49.______ services were on a sunny day in June. Each of us had looked forward to this moment for ten years. Now we were going out on our own to complete freedom, and we should have been flooded with joy.50.________, to my surprise, I found myself 51._____, something I hadn’t done for years. I noticed many of my 52.______, usually proud of their macho attitudes, were also wiping away tears. We knew we would never be together again as we were on that graduation day. Our senior year 53.______deep feelings of sadness for our54.______, as well as joy for our emerging into a new world 55.____the school campus.
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