问题
单项选择题
女，26岁，妊娠1个月，反复恶心、呕吐10天，与进食无关，不伴腹痛，今日呕出鲜血约200ml，呕血最可能的原因为
A．食管静脉曲张破裂出血
B．食管贲门黏膜撕裂症
C．胃溃疡出血
D．十二指肠溃疡出血
E．胃癌出血
答案
参考答案：B
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女，26岁，妊娠1个月，反复恶心、呕吐10天，与进食无关，不伴腹痛，今日呕出鲜血约200ml，呕血最可能的原因为
A．食管静脉曲张破裂出血
B．食管贲门黏膜撕裂症
C．胃溃疡出血
D．十二指肠溃疡出血
E．胃癌出血
参考答案：B
| 完形填空。 | |||
| Even if you are a good high-jumper, you can jump only about seven __1__ off the ground. You cannot jump any higher because the earth __2__ you hard. The pull of the earth is__3__ gravity (引力). You can easily __4__ out the pull of the earth. If you weigh __5__ , you will know how__6__ gravity is pulling you. Since there is gravity, water runs downhill. when you__7_ a ball into the air, it falls back down. Because of gravity, you do not fall off the earth __8__ it turns around. Then, can you get __9__ from the earth and go far out into space? Now you can do it, because spaceships have been invented. The spaceship will go fast that it can get rid of (除掉) the earth's gravity and __10__ you into space. | |||
| ( ) 1. A. kilometer ( ) 2. A. pulls ( ) 3. A. said ( ) 4. A. find ( ) 5. A. myself ( ) 6. A. much ( ) 7. A. fly ( ) 8. A. as ( ) 9. A. off ( ) 10. A. get | B. foot B. push B. called B. look B. yourselves B. many B. throw B. and B. away B. bring | C. feet C. makes C. told C. saw C. you C. heavy C. get C. because C. lost C. carry | D. kilometers D. hits D. spoken D. watch D. yourself D. long D. make D. or D. left D. throw |