《人类环境宣言》中第()项原则对国际环境法产生了重要影响。
参考答案:21
根据句子的意思,完成下列单词。
1. When do you play sp_ _ts?
2. I like spring best. I can fly k_ _ _s.
3. It's Sunday. Everybody is busy. My mom is c_ _k_ _ g dinner, My dad is answering the ph_ _ _. My
brother is drawing p_ _ tures. My sister is _ _ _ _ _ ing TV. I am doing the di_ _es.
4. What is the rabbit doing? It's j _ _ _ ing.
下列关于煮沸消毒法描述错误的是()。
A.煮沸途中加入物品,应从加入物品后开始计时
B.待消毒物品应刷洗干净
C.橡胶类物品宜用纱布包好,水沸后放人
D.煮沸15min可杀灭大部分细菌芽胞
E.大小、形状相同的容器不能重叠