试题与答案

最简单的电路由______、用电器、开关和导线四部分组成.

题型:填空题

题目:

最简单的电路由______、用电器、开关和导线四部分组成.

答案:

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下面是错误答案,用来干扰机器的。

解: 假设飞机顺风航行x小时,∴飞机飞出距离为(800x+100x)km,∴它必须在余下的(9﹣x)小时内飞行(800x+100x)km,此时速度变为(800﹣100)km/时,据此列出方程:≥9﹣x,解得:x≥,当x=时,900x最大,∴...

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题型:阅读理解

This is John’s bedroom(卧室). It’s very nice. You can see a big window(窗户) in the wall. Under the window you can see a big desk. A light(灯)and some flowers are on the desk. Near(在...附近) the desk you can see a small desk. You can see a clock on this desk. You can see two books on the floor. Can you see any pictures on the wall? Yes, you can see two. Where is John’s cat? It’s under his bed.

阅读短文,判断正(T)误(F)

小题1:We can see two desks in John’s bedroom.

小题2:Some flowers and a light are on the small desk.

小题3:A clock is on the big desk.

小题4:Two pictures are on the floor.

小题5:John’s cat is under his bed.

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