题目

化学课上我们曾经观察过如图所示的实验。 （1） 实验中，铜片上的白磷很快燃烧，其化学反应方程式为。 （2） 该实验主要利用了铜片良好的性。燃着的白磷熄灭后，去掉铜片上的白色固体，可看到铜片表面变黑．该黑色物质是（填化学式）。 （3） 烧杯中的水在实验中没有起到的作用是 （填序号）。 A . 作反应物 B . 隔绝空气 C . 升高温度On Saturday, I played soccer with my classmates all day,and I was really1     . I didn't want to do my homework and I needed to have a good rest. I invited my friend, Dave，to my house. First, we2     some popcorn(爆玉米花) .Then we3     TV. My favorite show Life in the City was4     TV. But after ten minutes,the television screen went black. I wanted to see the last part of the5     I6     my friend Peter. I said, "Our television screen went black. We missed the end of Life in the City. What7     you?" Peter answered, "I8     it too!" I shouted,"Oh,no!" Then Peter said,"  9     I taped(把录在磁带上) it. You can come and see ittomorrow.”I said,"Oh,10    ！" I had a busy day,but it wasn't too bad.(   ) 1.A. difficult   B. tired   C. different   D. boring(   ) 2.A. make   B. made   C. makes   D. making(   ) 3.A. look   B. looked   C. watch   D. watched(   ) 4.A. in   B. under   C. on   D. of(   ) 5.A. screen   B. dog   C. people   D. show(   ) 6.A. called   B. invited   C. gave   D. went(   ) 7.A. about   B. in   C. from   D. on(   ) 8.A. miss   B. missed   C. missing   D. to miss(   ) 9.A. And   B. If   C. But   D. Or(   ) 10.A. bad   B. sad   C. great   D. unhappy