题目

Do you still remember the haze（雾霾）in the winter? So many people got terribly ill during or after the haze. _36_Here is advice for you to protect yourself in hazy weather. Spend less time outdoors.This is the most effective way for self-protection in such bad weather.With PM2.5 increasing 103mg per cubic meter,residents will risk a 2.29% increase of death,which experts found out in 2012.If you have to get out,avoid riding bicycles._37_ Close your windows.Experts advice residents to avoid opening windows at home.If you have to ,avoid the time when smog is at its densest（浓的）The twins were so much alike that we had great trouble ________one from the other.A．distinguishing B．to distinguishC．distinguish D．distinguished