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第1页共7页 多学科网书城四 品牌书店·知名教辅·正版资源 b.zxxk.com● 您身边的互联网+教辅专家 课下主题训练 自然灾害与防范， 安全常识与自我保护 1.阅读理解 Do you want to level up your mask-wearing while also looking like you're about to battle with Batman?This is life-wearing Razer Zephyr,a wearable air purifier.A version of Razer's latest appliance made waves in January during the Consumer Electronics Show. It's no surprise that tech companies are considering a leap beyond cloth and surgical masks that have come to define the COVID-19 pandemic.It has a hard shell with two belts to fit onto your head.There are two air exchange chambers (on the front,featuring double circulating fans to help circulate cool air.The chambers feature N5 filters (providing two-way protection for you and those around you.It's also transparent (with inside lights and an anti-fog coating to help solve one of the key issues with mask-wearing:watching mouth move when you speak. Good as the mask appears,will it protect you from COVID-19?According to Razer,the mask is registered with the Food and Drug Administration and lab tested for 99%BFE,or Bacterial Filtration Efficiency,a measure of how well it filters out bacteria."It is not tested specifically against the COVID-19 virus,but offers the same functionality and adequate protection due to its 99%BFE rating,"Razer's website says. There's also the financial cost to consider.The mask itself is $99,and Razer sells a pack of 10 sets of N95 filters for $30.By comparison,a quick search for surgical masks on a shopping website turned up a box of 50 masks for between S11 -$14. "I've tried out the $99 Zephyr for roughly a week now.Wearing the Zephyr feels comfortable.The adjustable head straps (allow for the ideal fit.Above all,it feels breathable thanks to the air circulating through its fans,"one commented on the shopping website. 语篇解读：本文是一篇说明文。文章主要介绍了一款可穿藏的空气净化器及这种设备 的工作原理、使用感受等。 1.Why is the Zephyr made transparent? A.To fix lights inside. B.To circulate cool air C.To test the anti-fog coating. D.To expose mouth