猜你喜欢
- 177×13+255×999+510.
- 2一个等腰梯形,上底与腰相等,底角是60度,怎样均分四等份
- 3如果一个扇形的圆心角扩大为原来的3倍,半径长缩小为原来的13,那么所得的扇形面积与原来扇形的面积的比值为( ) A.1 B.3 C.9 D.13
- 4Your____(speak) English is much better than your____(write)
- 5若最简二次根式根号3a+b与a+b次根号2b是同类二次根式,则a=(),b=()
- 6Mrs.Green often does housework at home.(变一般疑问句)
- 7Have you finished your work?—No()A.not yet B.not untilCalreadyDnever
- 8改错:C+O2=CO2↑ Mg+O2=MgO2 H2+O2=H2O2
- 9自来水中加入硝酸银溶液的现象
- 10求成语里有JUN(拼音)的4字成语