单项选择题

脉压减小可见的疾病是

A.主动脉瓣关闭不全
B.主动脉瓣狭窄
C.主动脉硬化
D.高血压
E.风湿性心脏病

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Music to My EarsAs a boy growing up in Shenyang, China, I practiced the piano six hours a day. I loved the instrument. My mother, Xiulan Zhou, taught me to read notes, and my father, Guoren Lang, concertmaster of a local folk orchestra, showed me how to control the keys. At first I played on Chinese keyboards-cheap, but the best we could afforD.Later my parents bought me a Swedish piano, but I broke half the strings on it Playing Tchaikovsky (柴科夫斯基). That's when my parents and my teacher decided I was too much for such an instrument—and for our hometown. To be a serious musician, I would have to move to Beijing, one of our cultural capitals. I was just eight years old then.My father, who played the erhu, a two-stringed instrument, knew that life wouldn't be easy. Millions of pianists in China were competing for famE.'You need fortune,' my father saiD.'If you don't work, no fortune comes.' 'But music is still music,' he added, 'and it exists to make us happy.'To relocate to Beijing with me, he made a great sacrificE.He quit his concertmaster's job, which he loved, and my mother stayed behind in Shenyang to keep working at her job at the science institute to support us. They both warned me, 'Being a pianist is harD.Can you live without your mother?' I said, 'I want my mother!' But I knew I needed to be in Beijing. In America, people often move and start over. But it is not in China, not in those days.Suddenly my father and I were newcomers—outsiders. To the others around us, we spoke with funny northern accents. The only apartment we could find for the money we had was in an unheated building, with five families sharing one bathroom. My father cooked, cleaned and looked after mE.He became a 'house-husband', basically.We lived far from my school, and since the bus was too expensive, my father would 'drive' me on his bicycle every day. It was an hour-and-a-half trip each way, and I was a heavy boy, much heavier than I am as an adult. He did this in winter too. Imagine! During the coldest nights, when I practiced piano, my father would lie in my bed so it would be warm when I was tireD.I was miserable, but not from the poverty or pressurE.My new teacher in Beijing didn't like mE.'You have no talent,' she often told mE.'You will never be a pianist.' And one day. she 'fired' mE.I was just nine years olD.I was desperatE.I didn't want to be a pianist anymore, I decideD.I wanted to go home to be with my mother. In the next two weeks I didn't touch the piano. Wisely, my father didn't push. He just waiteD.Sure enough, the day came at school when my teacher asked me to play some holiday songs. I didn't want to, but as I placed my fingers on the piano's keys, I realized I could show other people that I had talent after all.That day I told my father what he'd been waiting to hear—that I wanted to study with a new teacher. From that point on, everything turned arounD.When Fortune Spots YouI started winning competitions. We still had very little money-my father had to borrow $ 5 000 to pay for a trip to the International Young Pianists Competition in Ettlingen, Germany, in 1994, when I was 12. I realized later how much pressure he was under as I watched footage (电影胶片) of the contest. Tears streamed down his face when it was announced that I'd won—earning enough money to pay back our loan.It was soon clear I couldn't stay in China forever. To become a world-class musician, I had to play on the world's bigger stages. So in 1997, my father and I moved again, this time to Philadelphia, so I could attend The Curtis Institute of MusiC.Finally our money worries were easing. The school paid for us an apartment and even lent me a Steinway (斯坦威钢琴). At night, I would sneak into the living room just to touch the keys.Now that I was in AmeA.His mother.B.His father.C.His unclE.D.His kindergarten teacher.

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单项选择题

指导患者服药，错误的方法是

A.服铁剂忌饮茶
B.服酸类药物需用吸水管吸入
C.服止咳糖浆后不宜饮水
D.助消化药饭前服
E.对胃有刺激的药物饭后服