While astronauts in space get to do many exciting things，they miss out on ordinary things that we all take for granted-being able to walk on firm ground，hanging out with family and digging into a slice of hot steaming pizza．Though not much can be done about the first two things，there may soon be a solution to the third one，thanks to this cool 3-D pizza printer!
About a year ago，NASA offered ＄125，000 to Anjan Contractor，a 3-D technology expert，to build a device that would allow astronauts to make pizza on demand．The mechanical engineer promised that his invention would produce pies in large quantities that looked，tasted and even smelled like pizza made in common ovens．
Late last year，the engineer presented a video of his first prototype（原型） that begins by creating a single slice of dough （面團(tuán)） that is cooked and printed at the same time．Then comes the tomato "sauce"-a mix of tomato powder，oil and water and finally，a protein slice that resembles cheese．While the video doesn't show the baking process，the inventor says that once the pizza is printed，it can be ready to be consumed in 7 seconds．
While the pie in the video looks delicious enough to attract any pizza lover，Anjan Contractor is far from ready for astronauts．That's because he still has to find a solution to make the food container in the printer last for 30 years．Though that may sound unrealistic，actually it is not．
Anjan Contractor believes that the only way that is possible is that the water is removed from all the ingredients（配料） and then they are reduced to the powder form．This，as you can imagine，will not be so easy．But，while the printer may not be ready for space，it certainly looks ready enough for people on earth．
Hopefully，NASA and Contractor will consider selling it to those not fortunate enough to go to Mars!
（1）Why does the author mention the things that astronauts in space cannot do？ DD
A．To ask us not to take common things for granted．
B．To show they live a difficult life there．
C．To show their life is boring in space．
D．To introduce the topic of the text．
（2）NASA offered ＄125，000 to Anjan Contractor mainly to CC．
A．create some new type of 3-D printer
B．a(chǎn)ttract more companies to work for NASA
C．help astronauts in space enjoy fresh pizza one day
D．produce pizza in large quantities to earn great profits
（3）The biggest challenge that Anjan Contractor is faced with now is probably that DD．
A．he has no money left to go on with his research
B．the pizza doesn't seem appetizing to pizza lovers
C．he has no way to make pizza that can last for thirty years
D．he cannot make the food container last for decades
（4）What's the best title of the passage？ BB
A．NASA is trying its best to help astronauts eat better
B．Astronauts may soon be able to enjoy steaming hot pizza
C．NASA is working on making pizza for common people
D．A 3-D pizza printer has been used to make pizza
【答案】D；C；D；B
【解答】
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發(fā)布：2024/5/27 14:0:0組卷：5引用：1難度：0.5
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1．Rainforests provide much of the world's oxygen.People have been trying to protect them for years.But another type of forest，the cloud forest，is just as important to humans.
These forests are at the tops of mountains，generally near the equator （赤道）.These wet，wooded mountaintops are mainly in African and Central and South American countries.They are called "cloud forests" because their height allows for the formation of clouds among the trees.The trees in these forests pull water out of the clouds.The water gathers on the leaves and falls into small rivers below，which flow into towns at the bottom of the mountain.The yearly rainfall in these areas is about 180 centimetres.Cloud forests can pull in up to 60 percent of that.The water is important to the plants and the people in the area.It helps them survive.
Cloud forests are also home to countless species of plants that can't be found anywhere else.One small cloud forest has as many types of plants as there are in all of Europe.In fact，there are so many that scientists haven't made a complete list of them yet.
These forests are being destroyed at increasing speed.Trees are being cut down，and roads are being built in their place.Some people have a goal to get government money to protect the forests.But they have had little success so far.Another way is to take the place of the destroyed plants with new ones.That，too，has been difficult because the plants are so special.There's plenty of work to be done，but saving the cloud forests is still possible with creative solutions.
（1）Where can you probably find cloud forests？
A．In North America.
B．Far from the equator.
C．In an African country.
D．At the foot of mountains.
（2）How much rainfall is pulled in by the cloud forests in those areas every year？
A．About 60 cm.
B．About 108 cm.
C．About 180 cm.
D．About 300 cm.
（3）What is the main idea of paragraph 3？
A．Europe is short of plant types.
B．Scientists are working on a list.
C．Cloud forests are getting smaller.
D．Cloud forests house many plants.
（4）What will be discussed in the following part of the text？
A．Ways to protect cloud forests.
B．Goals of cloud forest protectors.
C．Difficulties in planting new trees.
D．Successes of getting wide support.
（5）Where can we probably find the text？
A．In a storybook.
B．In a travel guide.
C．In a chemistry textbook.
D．In a geography magazine.發(fā)布：2025/1/1 18:0:1組卷：7引用：3難度：0.5 -
2．The baby is just one day old and has not yet left hospital．She is quiet but alert（警覺）．Twenty centimeters from her face researchers have placed a white card with two black spots on it．She stares at it carefully．A researcher removes the card and replaces it by another，this time with the spots differently spaced．As the cards change from one to the other，her gaze（凝視） starts to lose its focus - until a third，with three black spots，is presented．Her gaze returns；she looks at it for twice as long as she did at the previous card．Can she tell that the number two is different from three，just 24 hours after coming into the world？
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（1）The experiment described in Paragraph 1 is related to the baby's．
A．sense of hearing
B．sense of sight
C．sense of touch
D．sense of smell
（2）Babies are sensitive to the change in．
A．the size of cards
B．the colour of pictures
C．the shape of patterns
D．the number of objects
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A．To reduce the difficulty of the experiment．
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C．To carry their experiment further．
D．To keep the babies' interest．
（4）Where does this text probably come from？
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B．Children's literature．
C．An advertisement．
D．A science report．發(fā)布：2025/1/1 17:0:1組卷：3引用：3難度：0.5 -
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B．Record.
C．Arrange.
D．Explore.
（2）What point does the author make about photographers in Paragraph 3？
A．They are unable to decide on the best plan of action.
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D．Some of them refuse to try to understand the way others work.
（3）What is the main idea of Paragraph 4？
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（4）In the last paragraph，Jim states that.
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D．he likes to go to places that few people bother to visit發(fā)布：2025/1/1 18:0:1組卷：20引用：3難度：0.7