S5. Why are people unable to see clearly even in daytime in New York

【参考答案】

Smoke-fog drifts over the city．[详细解答]所谓说明文或议论文是对一种现象阐述作者的观点。......

(↓↓↓ 点击下方‘点击查看答案’看完整答案 ↓↓↓)