问题
单项选择题
下列有机磷杀虫药毒性最高的是（）
A.锌硫磷
B.氧尔朱
C.对硫磷
D.敌百虫
E.敌敌畏
答案
参考答案：C
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下列有机磷杀虫药毒性最高的是（）
A.锌硫磷
B.氧尔朱
C.对硫磷
D.敌百虫
E.敌敌畏
参考答案：C
Friends are very important in our everyday life. Everyone needs friends. We all like to feel close to someone. It is nice to have a friend to talk, laugh, and do things with. , sometimes we need to be alone. We don’t always want people . But we would feel lonely if we never had a friend. No two people are . Friends sometimes don’t get on well. That doesn’t mean that they no longer like each other. Most of the time they will and become friends again. Sometimes friends move away. Then we feel very . We miss them very much, but we can call them and write to them. And we can new friends. It is encouraging to find out how much we like new people when we get to know them. There’s more good news for people who have friends. They live longer than people who don’t. Why? Friends can make us feel happy. Being happy helps you well. If someone cares about you, you take care of yourself.
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