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- 1jim's jacket is blue.改一般疑问句 ____ ____ jacket blue?
- 2把一骰子投掷2次,第一次出现点数为a,第2次出现点数为b
- 3离子方程式:氯化铝溶液中加入过量氨水
- 4He ( )(have)a music lesson on Thursday afternoon
- 5Tom and Peter had known each other since they were little.
- 6A、B、C、D分别是常见的酸、碱、盐,A中含钾元素,它们之间有如下转化关系: ①2A+B═C+2H2O;②C+D═BaSO4↓+2A;③D+CuSO4═BaSO4↓+Cu(OH)2↓ 根据上述信息回答: (1)写化学式. A_;B_;C_;
- 7谁能帮我做一下这道英语题:The price of cellphones————(has risen ;has been raised)recently.该选
- 8乙的速度是甲的速度的2/3.两人分别由A,B两地同时出发,如果相向而行1小时相遇;如果同向而行甲需多少小时才能追上乙?
- 9He found some meat in the fridge(改为一般疑问句)
- 10He must have been asleep at that time,(wasn't) he?为什么是用 wasn't 而不是 didn't