请输入或粘贴题目内容
搜题
拍照、语音搜题，请扫码下载APP
题目内容
（请给出正确答案）
此题为判断题(对，错)。
答案
更多“Viruses can cause programs crashing but cant cause entire hard disk deleting.()”相关的问题
第1题
Eating too much fat can ___________ heart disease and cause high blood pressure.
A) attribute to B) attend to C) contribute to D) devote to
第2题
Passage 1 Falls are the number one cause of death to old people at home. Most old people can live safely at home if they make a few changes. Falls are common as people are getting older. Up to half of home accidents could be prevented by making some very simple changes. Here are a few suggestions. Mark trouble spots with bright tapes. The first and last steps on stairs are usually high-risk accident are- as. Applying bright tapes and using bright light in these areas would make these spots easier to see. Put grab bars(扶手) in the bathroom. A large number of falls occur in the bathroom. This is unfortunate(不幸的) because it's easy to make the area safe from accidents. Putting grab bars in the bathroom gives people something to hang on to. Invest in a personal alarm. A personal alarm can be started if a person falls or otherwise gets in trouble. With the push of a button, the alarm automatically sends a signal, which gets someone to call and see if the person needs help. 题目： 1. By making some very simple changes at home, old people ______.
A、are free from home accidents
B、can improve their health
C、are likely to live longer
D、can live more safely
第3题
If you feel a shortage of energy, join our Health Club. Fatigue is common for people to 1）_________ of to their doctors. In such cases, you should take a look at the causes for your tiredness and learn how you can get rid of it. Firstly, if you have to work hard 24 hours a day, seven days a week with high 2)_________, you will feel tired and bored. The 24/7 push to be productive can wear you out both physically and 3)__________. Your can have mini-breaks that will cheer you up and make your routine a little less routine. Secondly, if you sit staring at a screen for long periods of time you tend to blink less frequently and 4)_______your eyes. Your eyes need a break. Stand up once in a while to 5)_________ your legs and arms. Frequent breaks with long 6)__________ to your nearby parks will keep your body active and reduce eyestrain. Finally, gaining as little as five pounds of weight can cause 7)________. Extra weight also puts extra burden on your heart, which makes you tired. You can 8)_________ the habit of eating junk food and 9)___________ yourself to the basics of healthy eating. Try to eat smaller 10)_________ of food. With each pound of weight you lose, you'll feel a rise in energy. A) reverse B) strip C) strain D) empty E) portions F) fatigue G) rides H) emotionally I) reserve J) stretch K) dump L) complain M) collections N) efficiency O) strides
第4题
Biologists today don’t expect that anyone will find a magical fountain of youth.Growing older is a natural part of the life cycle that can’t be reversed.As human beings grow older, organs such as the heart and lungs may stop functioning properly.Sight and hearing may become weak.And the human body becomes more likely to come down with serious illnesses from which it cannot recover.
Considered together, changes that bring about the decline of an organism are called aging.Because of aging, many biologists believe that there may be a maximum age limit to which even the healthiest organisms can live.For human beings, this maximum age limit is about 110 years.
Perhaps the most important thing that you can learn from your study of human biology is that you have a lot of control over the aging process in your own life.In fact, within our control are many physical and mental factors that have much to do with aging.For example, each of us, as recent research indicates, can do many things to help prevent heart and vessel disease, which causes half the death each year in the United States.We can avoid eating a lot of fatty meat.Eating too much of these types of animal fats can lead to the clogging and hardening of blood vessels.We can cut back on smoking and hopefully quit entirely.We can limit the amount of alcohol we drink and the amount of sugar we eat.We can exercise regularly and strengthen the heart and other organs.And we can remember to take time out each day for ourselves, time just relax.Exercise, recreation and relaxation all reduce stress – inner tension that is hard on all body organs.
One final thing we can do is to try to keep aware of advances made in health education.Information is often available free of charge from health clinics or schools.
1.Which of the following is the leading cause of death in the United States？
A.Heart disease.
B.Cancer
C.Alcohol
D.Smoking
2.What happens as people grow older？
A.They dream of a magic pill to help them live a happy and long life
B.They come down with serious illnesses
C.Their organs become weak and may stop working properly
D.Their blood vessels become clogged
3.In the opinion of biologists, _________.
A.the aging process can be reversed
B.the aging process can be controlled and slowed down
C.the aging process can be got rid of
D.the aging process can go beyond its limit
4.We can slow down the weakening of all our body organs by ______.
A.not eating animal fat
B.limiting drinking and smoking
C.exercise, recreation and relaxation to reduce stress
D.preventing the clogging and hardening of blood vessels
5.Besides physical and mental factors, which of the following also contributes to living a long and healthy life according tot the passage？
A.Health education
B.Traditional medicine
C.artificial organs
D.The invention of magic pills
第5题
Mega-cities
In 1950, New York was the only city with more than 10 million inhabitants. There are now 11cities housing over 11 million people each. Tokyo alone has 17 million. In 1995, their combined population totaled 166 million; in 2015 it is forecast to be over 204 million.
The world’s urban population, increasing at four times the rate of rural populations, will double in the period 1990-2025, to over five billion. Consequently, two-thirds of the people of the world will live in cities, some of which will be huge. Moreover, about 90% of the growth will be in developing countries. This growth, adding around 60 million people per year to city population, will be mainly in Southeast Asia and Africa. The consequences are dramatiC.This is change on a scale never before experienced, bringing with it considerable challenges and opportunities.
Why does this growth happen？ Most of it results from internal migration rather than the international movement of people, and is caused by a variety of push and pull factors.
One push factor is due to pressure on land availability. Improved health brings population growth, causing people to move out of rural areas. Others move because of climate change or poor farming methods which often result in deforestation and flooding. Such changes can alter the social structure, leading people to move. Furthermore, civil war or regional conflicts also cause disruption, driving people out of rural areas.
On the other hand, there are the pull factors. Cities attract people because of the demand for labor in the manufacturing and service industries. As a result, they offer a higher standard of living to the lucky ones. Cities also tend to offer greater personal freedom.
The world economy has expanded five-fold since 1950, with the cities driving the expansion. Much of this economic expansion has been in the developing countries of Southeast Asia. Therefore, most of the mega-cities of the future will be found there.
1.The combined total population of these 11 cities ________.
A.was 166 million in 1950
B.was 17 million in 1995
C.is 204 million now
D.will be over 204 million in 2015
2.
The world ’ s rural population ________.
A.increased at one fourth the rate of urban population
B.increased at four times the rate of urban population
C.will be four times bigger by 2025
D.will double in the period 1990-2025
3.
Which of the following is true according to this passage？ _________.
A.There are now 11 cities with a total population of 11 million people.
B.The world ’ s urban population will be four times bigger by 2025
C.Various push and pull factors cause people to move 正确
D.Two-thirds of the world ’ s population will live in cities in Southeast Asia and Africa.
4.
People choose to leave rural areas partly because _________.
A.climate change or poor farming methods result in deforestation and flooding 正确
B.the living standards of cities are much lower
C.the population of rural areas increased faster than that of urban areas
D.there are not enough space for people to live there
5.
We can conclude from the last paragraph that_________.
A.the world economy has declined since 1950
B.economic expansion leads to mega-cities 正确
C.the expansion is mainly taking place in Europe
D.there isn ’ t any economic expansion in the developing countries
第6题
We judge race usually __42__ the coloring of the skin: a white race, a brown race, a yellow race and a black race. But __43__ you were to remove the skin you could not __44__ anything about the race to which the individual belonged. There is __45__ in physical structure. The brain or the internal organs to __46__ a difference.
There are four types of blood. __47__ types are found in every race, and n o type is distinct to any race. Human brains are the __48__. No scientists could examine a brain and told you the race to which the individual belonged. Brains will __49__ in size, but this occurs within every race. __50__ does size have anything to do with intelligence. The largest brain __51__ examined belonged to a person of weak __52__. On the other hand, some of our most distinguished people have had __53__ brains.
Mental tests which are reasonably __54__ show no differences in intelligence between races. High and low test results both can be recorded by different members of any race. __55__ equal educational advantages, there will be no difference in average standings, either on account of race or geographical location.
Individuals of every race __56__ civilization to go backward or forward. Training and education can change the response of a group of people, __57__ enable them to behave in a __58__ way.
The behavior. and ideas of people change according to circumstances, but they can always go back or go on to something new __59__ is better and higher than anything __60__ the past.
41. a. complete b. full c. total d. whole
42. a. in b. from c. at d. on
43. a. since b. if c. as d. while
44. a. speak b. talk c. tell d. mention
45. a. something b. everything
c. nothing d. anything
46. a. display b. indicate c. demonstrate d. appear
47. a. All b. Most c. No d. Some
48. a. same b. identical c. similar d. alike
49. a. remain b. increase c. decrease d. vary
50. a. Only b. Or c. Nor d. So
51. a. ever b. then c. never d. once
52. a. health b. body c. mind d. thought
53. a. big b. small c. minor d. major
54. a. true b. exact c. certain d. accurate
55. a. Provided b. Concerning
c. Given d. Following
56. a. make b. cause c. move d. turn
57. a. and b. but c. though d. so
58. a. ordinary b. peculiar c. usual d. common
59. a. that b. what c. whichever d. whatever
60. a. for b. to c. within d. in
第7题
a cause of death.
A) of B) to
C) with D) from
