CO报警仪的特点是()进行报警。
A.全方位
B.实时
C.定量
D.动态监测
参考答案:B, C, D
根据汉语或首字母提示完成句子。
1. Our________ (班长) is very outgoing.
2. Many________(游客) come to visit China every year.
3. I'm________ (累了). I want to have a rest.
4. Last week they t________ the bus back to school.
5. Let's do some o________ activities (活动). They're interesting.
良好的情绪和适度的情绪反应,表示儿童青少年的身心处于积极的健康状态. (判断对错)