【解题思路】 根据第二段" While most of these chemicals are released within a day of being put out, an analysis for the United States Food and Drug Administration (FDA) found the level of nicotine fell by just 50% five days later"可知,烟熄灭后,尼古丁的浓度在五天 以后仅下降一半,也就是说...
根据上文“Carbon dioxide is released when oil, coal, and other fossil fuels are burned for energy—the energy we use to power our homes, cars, and smartphones. By using less of it, we can limit our own contribution to climate change while also saving money.(当石油、煤炭和其他化石燃料...
B:Thelibrary.wanttoborrowsomebooks.A:26B:Aboutinventions.Youknowhavetoprepareforthesciencelesson.A:27Andwehumansarereallygreat.B:Thafstrue.Peoplehavemadelotsofinventions.A:28B:Sorry,mnotsure.29A:dontagree.nmyopinion,carsarethemostuseful.B:30A:Becausecangoanywherequicklyandconvenientlyincars.A.Maybe...
1. Most cities in the country have introduced(引进)"Clean Air Zones"whereby(凭此;借以)factories(工厂)and households(家庭)are only allowed to burn(燃烧)smokeless fuel(无烟燃料). 中国的大多数城市都设立了“清洁空气区”,工厂和家庭只能使用无烟燃料。 2. He...
“The numbers are significant and could have important impacts when cigarette ends are dealt with indoors or in cars. While much attention has been paid to the health influence of first-hand, second-hand and now third-hand smoking, it is not the case when it comes to the actual cigarette ...
D.AAA." /> When it comes to getting driverless cars onto American roads,the biggest challenge may be public acceptance.A just-released survey by AAA finds that 78 percent of Americans are afraid to ride in a fully driverless car. On the other hand,a majority of respondents are interested ...
C When it comes to getting driverless cars onto American roads, the biggest challenge may be public acceptance.Linst-released survey by AA A finds that 78 percent of Americans are afraid to ride in a fully driverless car.On the other hand, a majority of respondents are interested in adding ...
1– When a new model is released The best time to secure a lease deal is when a new model hits the market, as monthly payments for leasing for the older model drop substantially. During these times, leasing companies are keen to clear out existing stock, offering more competitive rates on...
2. Do you think some people are still addicted to writing letters? Yes, I think so. As the saying goes, “Everything exists for a reason.”Letters do have their own irreplaceable strong point.Letters are all written by people and they have great sentimental value. Let me put it this wa...
When are the two speakers going to visit the museum A.On Friday.B.On Saturday.C.On Sunday. 免费查看参考答案及解析 题目: When Ariel Cordova, 30, rode her bike to Jamaica Bay Wildlife Refuge in Queens, New York, last November, she planned to go hiking and bird-watching.A mile into ...