问题
单项选择题
门脉性肝硬化引起脾大的主要原因（）。
A.门脉压力增加
B.肝动脉压力增高
C.毒性产物的刺激
D.腹腔积液的压迫
E.肝静脉压力增高
答案
参考答案：A
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门脉性肝硬化引起脾大的主要原因（）。
A.门脉压力增加
B.肝动脉压力增高
C.毒性产物的刺激
D.腹腔积液的压迫
E.肝静脉压力增高
参考答案：A
John and Bobby joined a wholesale(批发)company together just after graduation from college the same year. ___1____ worked very hard. After several years, however, the boss promoted Bobby to the ____2___ of manager but John remained a(n) ____3___ employee. John could not take it any more, so he ___4____ his resignation(辞职信）and complained the boss did not know how to____5___ hard-working staff. The boss knew John worked very hard for the years. He thought for a moment and said, “ I have a ____6___ .1 hope you can do one more thing for our company before you leave. Perhaps you will change your ____7___ ."John didn't ___8___ . The boss asked him to go and find out anyone ___9___ watermelons in the market. John went and returned soon. The boss asked _____10__ it cost per kilogram. John shook his head and went back to the market to ask and returned to __11_____ to the boss that the melon was $1.2 per kg. The boss told John to wait a second, and he asked Bobby to do the same thing. Bobby went, returned and said, "Boss, only one person sells watermelons, $1.2 per kg, $10 for 10kg. He has 340 melons ____12___. Every melon weighs about 2 kg, bought from the South two days ago. They are fresh and red, of good quality." John was very __13_____ and realized the___14____ between himself and Bobby. He decided not to resign _____15__ to learn from Bobby. My dear friends, a more successful person is more observant, thinks___16____ and explores in depth. ___17____ exist in the daily details. For the same matter, a more successful person sees more and farther so that he can find out a chance and catch it to___18___ his aim. If a person sees one year ahead, __19____ another sees only tomorrow, the difference between a year and a day is 365 times, then how ___20____ you win?
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