氧气呼吸器使用完毕后,应()。A、先摘面具,后关氧气瓶 B、先关氧气瓶,后摘面具 C 发布时间:2017-08-05 13:07 │ 来源:www.tikuol.com 题型:单项选择题 问题: 氧气呼吸器使用完毕后,应()。A、先摘面具,后关氧气瓶B、先关氧气瓶,后摘面具C、不分先后次序
题型:单项选择题 用方框内单词的适当形式填空, 每词只能用一次。read talk swim play wear sing listen to hear watch help1.In class we the teacher when she reads the text. 2.Tony likes music and he likes . 3.Be quiet!Can you someone is singing a song? 4.Betty always the piano on weekends. 5.Tom's aunt always T shirts. 6.Let's this magazine. 7.Daming usually to his classmates. 8.Amy is going to in the lake. 9.The family like TV at home together. 10.Li Lei always others as Lei Feng. 查看答案