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We don't need heating system, ______.
A．and nor we can afford it
B．we don't afford it
C．nor can we afford it
D．nor can it afford
答案
更多“We don't need heating system, ______.A．and nor we can afford itB．we don't afford itC．nor c”相关的问题
第1题
However, we Americans need to become more (4)_____ about the effects those pesticides on our food. More (5)_____, we need to think about what new (6)_____ is necessary to protect ourselves from a (7)_____ too rich in Pesticide residue. If we don't demand greater (8)_____ on pesticide use, we may be surprised, dismayed, and (9)_____ horrified by the consequence of its use.
On the most obvious level, farm workers who continue to use the pesticides (10)_____ their present rate will (11)_____ serious diseases. It's no (12)_____ that farmers (13)_____ to herbicides have a six times greater risk of getting cancer. (14)_____, children who live in homes where pesticides are used have an increased chance of getting childhood leukemia(白血病).
But the farmers are not the only ones (15)_____ risk. Consumers may also suffer serious side effects from daily (16)_____ of foods tainted(污染) by pesticides. Although scientists have yet to prove the link (17)_____, they are concerned that pesticide use may be one reason for the startling increase in various forms of cancer like breast and colon(结肠) cancers.
We need new legislation that (18)_____ stricter standards governing pesticide residues in food. Much of the current legislation is based on ignorance. Simply (19)_____, we allow high levels of carcinogens in our food because we don't know for sure that they do cause cancer in humans. Yet, why should we take the risk？ If there's a chance that a pesticide causes cancer, then it should be (20)_____ from use.
A．In spite of
B．Thanks to
C．Given
D．Provided
第2题
41.Volunteers don' tget pald, but the rewards from thel deeds are__ and highly appreciated.
A.cherished
B.priceless
C.valuable
D.cheap
42.One single volunteer is like a candle inthe nlght tor those who are In().
A.shineness
B.darkness
C.lightness
D.brightness
43.We should try to do_ we can.
A.whichever
B.however
C.whoever
D.Whatever
44.Imagine the power of thousands of " candlies"，and the great (will make in people' s Iives.
A.attention
B.shinenes
C.brightness
D.difference
45.As for thoge whio.Jight into tho Iives of ohors, surely someday Uney too may be ineed of that same lght hey offered.
A.lake
B.lead
C.make
D.bring
第3题
Self-image is your own mind's picture of yourself. This image includes the way you look, the way you act, the way you talk and the way you think. Interestingly, our self-images are often quite different from the images others hold about us. Unfortunately, most of these images are more negative than they should be. Thus changing the way you think about yourself is the key to changing your self-image and your whole world.
The best way to defeat a passive self-image is to step back and decide to stress your successes. That is, make a list if you need to, but write down all of the great things you do every day. Don't allow doubts to occur in it.
It very well might be that you are experiencing a negative self-image because you can't move past one flaw or weakness that you see about yourself. Well, roll up your sleeves and make a change of it as your primary task. If you think you're silly because you aren't good at math, find a tutor. If you think you're weak because you can't run a mile, get to the track and practice. If you think you're dull because you don't wear the latest trends, buy a few new clothes.
The best way to get rid of a negative self-image is to realize that your image is far from objective and to actively convince yourself of your positive qualities. Changing the way you think and working on those you need to improve will go a long way towards promoting a positive self-image. When you can pat yourself on the back, you'll know you're well on your way.
You need to build a positive self-image when you______.
A．dare to challenge yourself
B．feel it hard to change yourself
C．are unconfident about yourself
D．have a high opinion of yourself
第4题
“The Internet is growing quickly, and we still have a lot of work to do to cover the planet.” Cerf told the first day of the annual conference of Internet Society in Geneva where more than 1500 cyberspace fans have gathered to seek answers to questions about the tangled web of the Internet.
Cerf believed that it would soon be possible to send real-time science data on the Internet from a space mission orbiting another planet such as Mars. “There is now an effort under way to design and build an interplanetary Internet. The space research community is coming closer and closer and merging. We think that we will see interplanetary Internet networks that look very much like the ones we use today. We will need interplanetary gateways and there will be protocols to transmit data between these gateways, ” Cerf said.
Francois Fluckiger, a scientist attending the conference from the European Particle Physics Laboratory near Geneva, was not entirely convinced, saying: “We need dreams like this. But I don’t know any Martian whom I’d like to communicate with through the Internet.”
Cerf has been working with NASA’s Pasadena Jet Propulsion Laboratory—the people behind the recent Mars expedition—to design what he calls an “interplanetary Internet protocol.” He believes that astronauts will want to use the Internet, although special problems remain with interference and delay.
“This is quite real. The effort is becoming extraordinarily concrete over the next few months because the next Mars mission is in planning stages now,” Cerf told the conference.
“If we use domain names like Earth or Mars...jet propulsion laboratory people would be coming together with people from the Internet community.” He added.
“The idea is to take the interplanetary Internet design and make it a part of the infrastructure of the Mars mission.”
He later told a news conference that designing this system now would prepare mankind for future technological advances.
“The whole idea is to create an architecture so the design works anywhere. I don’t know where we’re going to have to put it but my guess is that we’ll be going out there some time,” Cerf said.
“If you think 100 years from now, it is entirely possible that what will be purely research 50 years from now will become commercial 100 years from now. The Internet was the same—it started as pure research but now it is commercialized.”
第31题：According to Cerf, the purpose to design interplanetary internet is to _____.
［A］ send real-time science data
［B］ communicate with astronauts
［C］ lay foundation for future technological advances
［D］ commercialize the technology
第5题
"The Internet is growing quickly, and we still have a lot of work to do to cover the planet", Cerf told the first day of the annual conference of the Internet Society in Geneva where more than 1,500 cyberspace fans have gathered to seek answers to questions about the tangled web of the Internet
Cerf believed that it would soon be possible to send real-time science data on the Internet from a space mission orbiting another planet such as Mars. "There is now an effort under way to design and build an interplanetary Internet. The space research community is coming closer and closer and merging. We think that we will see interplanetary Internet networks that look very much like the ones we use today. We will need interplanetary gateways and there will be protocols to transmit data between these gateways", Cerf said.
Francois Fluekiger, a scientist attending the conference from the European Particle Physics Laboratory near Geneva, was not entirely convinced, saying. "We need dreams like this. But I don't know any Martian whom I'd like to communicate with through the Internet".
Cerf has been working with NASA's Pasadena Jet Propulsion Laboratory—the people behind the recent Mars expedition—to design what he calls an "interplanetary Internet protocol" He believes that astronauts will want to use the Internet, although special problems remain with interference and delay.
"This is quite real. The effort is becoming extraordinarily concrete over the next few months because the next Mars mission is in planning stages now", Cerf told the conference.
"If we use domain names like Earth or Mars jet propulsion laboratory people would be coming together with people from the Internet community. ' He added.
"The idea is to take the interplanetary Internet design and make it a part of the infrastructure of the Mars mission".
He later told a news conference that designing this system now would prepare mankind of future technological advances.
"The whole ides is to create an architecture so the design works anywhere. I don't know where we're going to have to put it but my guess is that we'll be going out there some time", Cerf said.
"If you think 100 years from now, it is entirely possible that what will be purely research 50 years from now will become commercialized".
According to Cerf, the purpose to design interplanetary Internet is to
A．send real-time science data.
B．communicate with astronauts.
C．lay foundation for future technological advances.
D．commercialize it
第6题
“I don’t have much money。”he’d say．“I need to _________my schoolloans．”
A．pay out
B．pay back
C．pay down
D．pay for
第7题
When we think about the future of the universe, we can see our "track" many billions of years into the future, but after that there are decision points to be dealt with and possible fates to consider. The goal of science is to reduce the ambiguity at the decision points and find the true road that will be followed.
According to the passage, it is difficult to be certain about the distant future of the universe because we______.
A．have too many conflicting theories
B．do not have enough funding to continue our research
C．are not sure how the universe is put together
D．have focused our investigations on the moon and planets
第8题
A. didn't need to clean
B. needn't have cleaned
C. don't need to clean
D. mustn't have cleaned
第9题
Which statement is right according to the passage？
A．We don't need person-to-person selling any more.
B．Since the Industrial Revolution, person-to-person selling disappeared.
C．Advertising pays for about two thirds of the cost of the programs on commercial television and radio.
D．Advertise on commerical television and radio is more expensive than on magazines and newspapers.
第10题
There is no creature that does not need sleep or complete rest every day.
If you want to know why, just try going without sleep for a long period of time. You will discover that your mind and body would become too tired to work properly. You would become irritable and find it hard to think clearly or concentrate on your work. So sleep is quite simply the time when the cells of your body recover from the work of the day and build up supplies of energy for the next period of activity.
One of the things we all know about sleep is that we are unconscious in sleep. We do not know what is going on around us. But that doesn't mean the body stops all activity. The important organs continue to work during sleep, but most of the body functions are slowed down.
For example, our breathing becomes slower and deeper. The heart beats more slowly, and the blood pressure is lower. Our arms and legs become limp(柔软的) and muscles are at rest. It would be impossible for our body to relax to such an extent if we were awake. So sleep does for us what the most quiet rest can not do.
Your body temperature becomes lower when you are asleep, which is the reason people go to sleep under some kind of covers. And even though you are unconscious, many of your reflexes(习惯性思维) still work. For instance, if someone tickles(使觉得痒) your foot, you will put it away in your sleep, or even brush a fly from your forehead. You do these things without knowing it.
If you don't have as much sleep as your body needs, you will ______.
A．work properly
B．think clearly
C．keep your attention on your work
D．easily get angry
