保____    病         喜____    净

秋____    护         纯____    落

生____    霜         降____    欢

有一正弦交流电，它的电压随时间变化的情况如图所示，则电压的峰值为____V；有效值为____ V；交流电的；频率为____ Hz.

计算（﹣1）÷（﹣9）×$\frac{1}{9}$的结果是（　　）

6.04949…是____ 小数，用简便方法表示，应写作____ ，保留三位小数约是____ ．

    It's a fine day today. The children are playing with their toys.

    Amy has a new plastic cup. It's red. Mike has a new toy truck. It's purple and green. Sarah has a lollipop. It's orange. John has a new bucket. It's green. Bob has a yellow balloon, it's nice.

    Mike and Bob are sharing their toys with others. How happy they are!

根据短文内容，判断正误。