125+45-515-数学

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• 已知a+1a=6．（1）若0＜a＜1，求a-1a的值；（2）若没有条件0＜a＜1的限制，则a-1a的值等于多少？-数学
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• .--- Have you finished your homework? --- No. I ______ Good Voice of China on Zhejiang TV all day ye
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• He would have been a doctor 20 years ago, but he _____ to be a teacher.A．choosesB．choseC．had chosenD
• Do you know when the Great Wall _________?A．was come into beingB．came into beingC．had come into bein
• –This is the first time I _____ pictures with you .–Now it is time that you ______ a picture for me
• Edward, you play so well. But I you played the piano.A．didn’t know B．hadn’t know C．don’t know D．have
• We were told not to touch the equipment in the laboratory unless ________.A．allowed to doB．allowing
• The rate of racial progress varies in different areas of the country, but in the past ten years ____
• This is the first time that I _____ at the meeting.A．had spokenB．have spokenC．spokeD．speak-高一英语
• （0.5-213）-（18-75）-数学
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• 已知整数a，b满足a+b=1404，请写出两组符合题意的a，b的值．-数学
• Ladies and gentlemen, please fasten your seat belts. The plane.A．takes offB．is taking offC．has taken
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• 化简：18-50+38．-数学
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• Instead of flocking into the cities, the peasants __________ villages and townships of a new type in
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• —Did you happen to hear the recent news? —Yes, Alice ____ the gold medal in the speech contest, whic
• 计算（1）22-123-2+3；（2）（46-38）÷22．-数学
• （1）计算：318+1550-412；（2）解方程：3x（x-1）=2x-2-数学
• The teacher told us that the sun ＿＿＿ in the east and ＿＿＿ in the west. A．raised; setB．rose; setC．rise
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• ---- I ’m sure Andrew will win the first prize in the final. ---- I think so. Hefor it for months.A．
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• x+xyxy+y+xy-yx-xy-数学