A. Helping to purify the air. B. Providing food for humans. C. Providing oxygen for humans. D. Providing shelter for humans. 相关知识点: 试题来源: 解析 A。本题考查植物在生态系统中的作用。植物可以帮助净化空气,选项 B 是为人类提供食物;选项 C 是为人类提供氧气;选项 D 是为人类提供庇护所,...
Plants can purify the air.What part of a plant is mainly responsible for purifying air? A. Leaves. B. Stems. C. Roots. D. Flowers. 相关知识点: 试题来源: 解析 A。植物的叶子主要负责净化空气。茎、根和花在净化空气方面作用较小。
百度试题 结果1 题目What’s the text mainly about? A. textile helping purify the air. B. An industry causing pollution. C. A way to achieve zero-emission. D. A trend in the fashion industry. 相关知识点: 试题来源: 解析 A 反馈 收藏 ...
ventilation, or air-conditioning (HVAC) units. Here they can safely and efficiently clean the air in the whole building. However, it is also possible to purchase portable air cleaners that work to purify the air in a single room. ...
home,bothofwhichwillbegraded. LateWork Anessaynotsubmittedinclassonthedue datewilllosealettergradeforeachclassperiodit islate.Ifitisnotturnedinbythe4thdayafter theduedate,itwillearnazero.Dailyassignmentsnotcompletedduringclasswillgetazero. Shortwritingsmissedasaresultofanexcused absencewillbeaccepted. 1.Where...
What do plants do to the air? A. Make it dirty B. Purify it C. Add pollutants to it D. Make it thinner 相关知识点: 试题来源: 解析 B。植物可以净化空气。A 选项是使空气变脏,C 选项是给空气添加污染物,D 选项是使空气更稀薄,都不符合。
Every time I go in the busy streets,always see some throw on the ground of dazzling things:the packing bag of brightly colored,the crush cigarette end,didnt chew clean apple and roll into a mass of waste paper.If everyone so dont speak hygiene,our beautiful home will become what look ...
to human lives.Fortunately,more and more people have come to realize how serious the problem is.The government has begun to take measures to fight against pollution.But there is still a long way to go.We should take care of our earth and try our best to win the buttle against pollutin....
Plants not only beautify our surroundings but also purify the air we breathe. What is the function of “not only...but also...” in this sentence? A. To show contrast. B. To express cause and effect. C. To emphasize and add more information. D. To introduce an E. xample. ...
百度试题 结果1 题目What do forests give us? A. Produce fresh oxygen. B. Purify water and air. C. Provide people with jobs. D. Help in regulating temperature and rainfall. 相关知识点: 试题来源: 解析 A,B,C,D 反馈 收藏