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- 1A story goes ______ Elizabeth I of England liked
- 2Mr Wang will ____ you at the airport tomorrow morning.Please tell me your flight number.
- 3一项工程,甲.乙两队合作要12天.现在甲队先做5天,乙队接着做7天,还剩下这项工程的60分之31.甲队单独做
- 4小华在用托盘天平测量物体质量时,在指针偏向分度盘中央刻度线右侧的情况下就开始进行测量,她在横梁平衡
- 5甲、乙二人分别从相距40km的A、B两地同时相向而行,甲速为6km/时,乙速为4km/时,甲带一只小狗和他同时出发,狗以速度为9km/时向乙奔去,遇到乙即回头向甲奔去,遇甲又向乙奔去……,知道二人相遇狗才停住,设狗跑了Xkm,方程怎么列啊?
- 6假如给我三天光明 告诉我们什么道理?
- 7she said she would come if she _ time .A.h as B .have C had
- 8因式分解：x^2+9y^2-6y-1
- 9亚硫酸钡溶于稀硝酸吗
- 10已知函数y=ax^3+bx^2 档x=1时,y有极大值3,（1）求a.b的值（2）函数y的增区间