我国是全球PM2.5浓度的高值区,PM2.5浓度导致的雾霾覆盖260万平方公里,造成 发布时间:2019-01-20 21:48 │ 来源:www.tikuol.com 题型:判断题 问题: 我国是全球PM2.5浓度的高值区,PM2.5浓度导致的雾霾覆盖260万平方公里,造成全国近6亿人健康影响。
题型:判断题 On holidays, they prefer to _____ at home rather than _____.A.staying, going hikingB.stay, going hikingC.stay, go hikingD.staying, go hiking 查看答案