Astronautshavealreadyvisitedthemoonandlivedonspacestati...
问题详情:
Astronauts have already visited the moon and lived on space stations. They' ve never been to another planet, but they might visit Mars soon. The astronauts will spend about six months traveling to the planet, then about two years on the planet and about six months traveling back to the earth. They' ll be away from the earth for about three years, so they' 11 need a lot of food !
It' s very expensive to take food into space. It costs about 120,000 dollars to carry something that weighs one kilogram. So an apple on Mars could cost 20,000 dollars! Of course, they will need to take quite a lot of food with them to feed the astronauts for three years. This amount of fresh food can not stay fresh, and is very expensive to take, so they need to find food that is not very heavy.
At the moment, astronauts on space stations eat dried food. It's very light, so it doesn't cost a lot of money to carry it into space. But astronauts stay healthier and happier if they eat fresh food. In the future, astronauts on Mars may grow vegetables like lettuce, spinach and carrots.
Astronauts on Mars will probably have special machines. They' ll use these machines to change beans into foods that taste like meat or cheese because it won' t be possible to keep animals in space.
1. The astronauts plan to go to next.
A. the earth B. the moon C. Mars D. space
2. Why do the astronauts have to eat dried food?
A. Because it is safe. B. Because it makes them happy.
C. Because it is cheap to buy. D. Because it is cheap to carry.
3. What may astronauts do in the future?
A. Take enough fresh food for their journey.
B. Grow some fresh vegetables on Mars.
C. Keep animals in space.
D. Grow food on their space stations.
4. Which of the following is TRUE according to the passage?
A. It will take the astronauts six. months to get to a planet.
B. If we take two kilograms of apples into space, it could cost 40,000 dollars.
C. Dried food is as healthy as fresh food for astronauts in space.
D. Astronauts will get foods that taste like meat or cheese from beans on Mars.
5. The best tide for this passage is
A. Food in Space B. An Important Planet
C. Vegetables in Space D. Astronauts in the Future
【回答】
CDBDA
知识点:阅读表达
题型:阅读理解
-
反比例函数与直线相交于点点的横坐标为,则此反比例函数的解析式为( ) A. ...
问题详情:反比例函数与直线相交于点点的横坐标为,则此反比例函数的解析式为( ) A. B. C. D.【回答】C;知识点:反比例函数题型:选择题...
-
下列各组词语中,没有错别字的一组是A.闲情逸致 声名鹊起 意气相投 金碧辉煌B.情随事迁 隐约...
问题详情:下列各组词语中,没有错别字的一组是A.闲情逸致 声名鹊起 意气相投 金碧辉煌B.情随事迁 隐约其辞 夸夸奇谈 前赴后继C.梦寐以求 百折不挠 闻过饰非 惨淡经营D.言简意赅 言近指远 伸张正义 良辰...
-
下列物质中,属于合成材料的是 A.棉花 ...
问题详情:下列物质中,属于合成材料的是 A.棉花 B.羊毛 C.塑料 D.天然橡胶【回答】C知识点:走进化学世界单元测试题型:选择题...
-
_______________,听取蛙声一片。 (*弃疾《西*月•夜行黄沙道中》)
问题详情:_______________,听取蛙声一片。 (*弃疾《西*月•夜行黄沙道中》)【回答】稻花香里说丰年知识点:其他题型:填空题...
相关文章
- It'slateeveninginthemiddleofthewinter.Thesnowisdeep,but...
- "Wehavebeenpayingcloseattentiontodevelopmentsandaskthe...
- ---Thestudentslookverytiredafterthesportsmeeting.---We...
- 阅读理解Inalmosteverybiguniversity(大学)intheUnitedStates,foo...
- --Manystudentswon'ttakepartintheafter-schoolactivitiest...
- Itisveryeasytocookinstantnoodles(方便面)inashorttimebyputt...
- 完形填空。It'sWednesdayafternoon.Schoolisover.Thestudentsar...
- 阅读理解。TodayalmosteveryoneknowscomputersandtheInternet.If...
- 阅读理解Maybethatsoundsdifficult,orisitexpensive?No!It’seas...
- 阅读下列短文,回答问题InBritainstudentshavetwohoursofPEeveryschool...