更多"[单选题]Only when we hurried to the ai"的相关试题:
[单选题]Only when the CIA Director David was forced to resignthat it's hard to keep our e-mail secret.
A.we realized
B.realized we
C.did we realize
D.we did realize
[不定项选择题]资料:When we see well,we do not think about our eyes very often. It is only when we cannot see perfectly that we realize how important our eyes are.
People who are near-sighted can only see things that are very close to their eyes,Everything else seems blurry(=unclear).Many people who do a lot of work,such as writing,reading and sewing become near-sighted.
People who are far-sighted suffer from just the opposite problem. They can see things that are far away,but they have difficulty in reading a book unless they hold it at arm’s length. If they want to do much reading,they must get glasses,too.
Other people do not see clearly because their eyes are not exactly the right shape. They have what is called astigmatism. This,too,can be corrected by glasses. Some people’s eyes become cloudy because of cataracts. Long ago these people often became blind. Now,however,it is possible to operate on the cataracts and remove them.
Having two good eyes is important for judging distances. Each eye sees things from a slightly different angle. To prove this to yourself,look at an object out of one eye;Then look at the same object out of your other eye. You will find the object’s relation to the background and other things around it has changed. The difference between these two different eye views helps us to judge how far away an object is. People who have only one eye cannot judge distance as people with two eyes.
When things far away seem indistinct, one is probably______.
A.astigmatic
B.far-sighted
C.suffering from cataracts
D.near-sighted
[单选题]Only when he was told that his precious stone was but an artificial gem did the old man realize that he had been cheated of almost RMB 100,000 yuan.
A.superficial
B.custom-made
C.ready-made
D.man-made
[单选题]When we read,we construct a mental _______ of the text in our minds,much as we do when we took at an area of land and create a mental map in our heads.
A.representation
B.imagination
C.interpretation
D.identification
[不定项选择题]Man can eventually land on Venus only when
A.the algae have done their work
B.the atmosphere becomes cooler
C.there is oxygen
D.it rains there
[单选题]Only when humanity began to get its food in a more ( ) way was there time for other things, like sports games and entertainment activities.
A.predictive
B.provocative
C.protective
D.productive
[不定项选择题]共用题干
When We Are Asleep
Everyone dreams,but some people never recall their dreams,or do so very rarely.
Other people always wake up with vivid recollections(记忆)of their dreams, though they
forget them very quickly.In an average night of eight hours' sleep,an average adult will
dream for around one hundred minutes,probably having three to five dreams,each lasting
from ten to thirty minutes.
Scientists can detect when someone is having a dream by using an instrument which
measures the electrical waves in the brain.During dreaming,these waves move more
quickly.Breathing and pulse rate also increase,and there are rapid eye movements under
the lids,just as though the dreamer were really looking at moving objects.These signs of
dreaming have been detected in all mammals(哺乳动物)studied, including dogs,
monkeys, cats, and elephants, and also some birds and reptiles(爬行动物).This period
of sleep is called the"D"state.Babies experience the"D"state for around 50%of their
sleep;the period reduces to around 25%by the age of 10.
Dreams take the form of stories,but they may be strange and with incidents not
connected,which make little sense.Dreams are seldom without people in them and they
are usually about people we know.One estimate says that two-thirds of the"cast"of our
dream dramas are friends and relations.Vision seems an essential part of dreams,except
for people blind from birth.Sound and touch are senses also often aroused,but smell and
taste are not frequently involved.In"normal"dreams,the dreamer may be taking part,or
be only an observer. But he or she cannot control what happens in the dream.
However,the dreamer does have control over one type of dream.This type of dream is
called a "lucid"(清醒的)dream. Not everyone is a lucid dreamer. Some people are
occasional lucid dreamers.Others can dream lucidly more or less all the time.In a lucid
dream,the dreamer knows that he is dreaming.
In a lucid dream we can use Morse code to communicate with others.
A.Right
B.Wrong
C.Not mentioned
[单选题]( )When we saw his face,we knew_______was bad.
A.the news
B.some news
C.a news
D.news
[单选题]When we talk about the element of the teaching aims “ABCD”, what does the “C” refer to?
A.content
B.capacity
C.condition
D.competence