Hello. I'm a green monster(怪物). I have a big head. I have one big eye and one big mouth. I have no nose. I have two arms and two legs. This is my friend. He is a monster(怪物), too. He is blue. He has a big body. He has two long arms and two strong legs. He has a long tail. We are very kind.

根据上面短文的意思判断下面的句子是否正确。

有以下几种物质：①食盐晶体   ②铜   ③KNO₃溶液   ④熔融的氢氧化钾   ⑤液态氯化氢    ⑥二氧化碳   ⑦酒精．回答以下问题（填序号）：

以上物质中能导电的是____ ；    属于电解质的是____ ．

关于物理实验的测量，下列说法正确的是（  ）

下面是从“实用新型外观设计”到“获得专利证”的整个过程，请把这个过程写成一段话，要求内容完整，表述准确，语言连贯，不超过75个字。

The policeman told the children _________ play in the street.