首页
登录
职称英语
The best title for this selection is ______. [br] [originaltext] Do you kno
The best title for this selection is ______. [br] [originaltext] Do you kno
游客
2023-11-11
74
管理
问题
The best title for this selection is ______. [br]
Do you know how astronauts act while whirling through space? Their food comes in plastic tubes, and they eat it from the tubes. Why? Spacecraft food must be light and easy to store. It must also be non-spoilable. Many of the foods made for eating in a spaceship have been a success. In fact, everyone may soon be able to have them!
Scientists have learned to keep some foods from spoiling by removing the oxygen from them. This is done by pumping nitrogen gas into them, forcing nearly all the oxygen out. Without oxygen, bacteria cannot grow, nor can the foods spoil.
(12[D])Freeze-drying is another way to keep food from spoiling. First the foods are frozen. Then they are dried. Fruits, vegetables, meat, and even ice cream can be freeze-dried. Years later, you can just add milk or water, and they’re ready to be eaten. And freeze-dried foods need no refrigeration!
(13[A])Besides non-spoilable foods, scientists can now make foods from non-food materials. Coal, gas, and other nonfoods have been turned into foods. By treating these materials with bacteria, scientists can produce rich proteins.
Experts say that four out of five of the world’s people do not eat enough protein. Man-made proteins could help people in needy areas. But it should be a long time before we sit clown to a bowl of coal and a glass of gas.
选项
A、always contain meat
B、need refrigeration
C、are dried and then frozen
D、last for a long time unspoiled
答案
D
解析
细节题。文章解释道:冻干技术是keep food from spoiling的另一种方法。故选D 。
转载请注明原文地址:https://tihaiku.com/zcyy/3178661.html
相关试题推荐
Whichofthefollowingisthebesttitleforthepassage?[originaltext]When
What’sthisnewsabout?[originaltext]AstudypublishedMondayfoundthatp
Whatkindofrobotsdoesthemanreferto?[br][originaltext]W:Hi,Paul,are
Whatkindofrobotsdoesthemanreferto?[br][originaltext]W:Hi,Paul,are
Whycan’tthespeakerssortouttheprogramnow?[br][originaltext]M:Couldwe
Whycan’tthespeakerssortouttheprogramnow?[br][originaltext]M:Couldwe
Whycan’tthespeakerssortouttheprogramnow?[originaltext]M:Couldwehave
Whathappenstotreeseachyear?[br][originaltext]Duringthiscentury,a
Whathappenstotreeseachyear?[originaltext]Duringthiscentury,archaeo
Whatisthewoman’sfavoritehobby?[br][originaltext]M:Hello!Youseemworri
随机试题
【B1】[br]【B7】A、angryB、sadC、happyB考查形容词辨义。angry愤怒的,生气的;sad悲伤的,伤心的;happy高兴的,快乐
Fromthebeginning,theideaofafiniteuniverseranintoitsowno
Today,mostcountriesintheworldhavecanals.Manycountrieshavebuiltca
TheGreatLymeDebateThere’sadebateragingoverLyme
【S1】[br]【S5】A、picksupB、putsupC、bringsupD、setsupA动词辨义。根据and引导的并列成分“公司重建
当信息系统的功能集中于为管理者提供信息和支持决策时,这种信息系统就发展为()。
肝脏格利森鞘膜内的主要管道有A.门静脉、肝静脉、肝胆管 B.肝动脉、门静脉、静
补充型医疗保险是对( )费用补偿不足部分进行有效的二次补偿A.死亡保险 B.
A.可不需特殊处理 B.立即行清宫手术 C.卧床休息,禁止性生活 D.需做
甲仓库为乙单位保管500t水泥,双方约定保管费用为1000元,后乙未能按约定支付
最新回复
(
0
)