英语（刘心灵）(5)

1、乐博思aall over the world the need for more laptops and computers increases each year. networks have been part of our life. probably everyone with a portable device (移动设备 has once logged on to a public wifi network without paying for it, while they are having a coffee, on a train, in a shopping mall or

2、 at a hotel. however, is this kind of public wifi network safe?some networks are better protected than others because encryption (加密）methods are used. therefore, they are safer than others. but a survey in 2015 showed that more than 950 million records were not protected, including addresses, emails

3、, birth dales, phone numbers, passwords and so on. these open wifi networks are really not safe, because it is very easy for hackers (黑客） to break into the operating system and get peoples private information.most smartphones and laptops, by themselves, search and connect to wifi networks. they usua

4、lly prefer a network with a connection that has been used before. hackers devices are able to record these searches and look like the trusted wifi networks. when these smartphones and laptops log on to the networks which are not real, hackers can easily steal their private information.so next time,

5、when we want to use our laptops or our smartphones in public places which offer free wifi networks，please think it twice or take safe measures before using them.42why do people like to go log on to a public wifi network？abecause it can provide useful informationbbecause the owner of the network is p

6、olitecbecause it is freedbecause it is safe43we can learn from the passage thatanot all the public wifi networks are safebnone of the public wifi networks is safecin 2015more than 950million records were protecteddthere is no way to protect our private information44hackers would probably get the fol

7、lowing exceptwhen we connect our laptops or smartphones to a public wifi networkaour birth datesbour passwordscour phone numbersdour smartphones45which of the following can be the best title of this passage？adont use public wifi networksbwhy the public wifi networks a possible dangercwe neednt prote

8、ct our private informationdwhy hackers break into the operating systembflu is a common disease in our daily life. it is caused by the flu virus. the disease causes dry throats and runny noses. you may also have a fever and cough together with body aches. sometimes, you may feel tired. usually, it ta

9、kes about one or more than two weeks for a person to get back to normal. however, if flu is serious, it may result in death. in the us, there are around 200,000 patients visiting hospitals every year because of flu. so, it is better that a person should be vaccinated（接种疫苗）against it.a study shows th

10、at the flu shot（注射）has an effect on 70%-90% of the people below 65 years old. the vaccine（疫苗）works after 2 weeks or so, so it is better to get the shot two weeks before the onset of the flu season. if you get the shot, your body will be prepared to face the disease when flu spreads. in the united st

11、ates, the flu season is usually from november to april.the flu shot is safe for use. some people fear that the vaccine will bring other virus into their body. this worry is not necessary. the viruses in the vaccine are dead, and cannot cause danger in the body. however, we should know that the flu s

12、hot has some small side effects, which are not serious problems.the flu shot is forbidden to people who are allergic（过敏的）to eggs or to women who are going to have babies. it may result in terrible problems like heart attack. people who have a high fever should not get the shot, either. if a person d

13、oes not feel well after taking the vaccine, he or she must go to see the doctor immediately.( ) 38. from paragraph 1, we can learn that flu doesnt cause _.a. fever or coughb. runny rosesc. body aches or tirednessd. clear throats( ) 39. the underlined word “onset” in paragraph 2 means _.a. endb. clos

14、ec. deathd. start( ) 40. according to the passage, what is some peoples fear for the flu shot?a. they may feel tired.b. they may have a bad cough.c. vaccine will bring other virus into their bodyd. they may have dry throats and runny noses.( ) 41. the flu shot can be given to people who _.a. are hav

15、ing a high feverb. dont feel well after eating eggsc. are going to give birth to babiesd. are healthy and want to prevent the disease cthe third china electronic information expo was held at the shenzhen convention and exhibition centre（会展中心）from 9 april to 11 april. it attracted more than 1,600 com

16、panies to display their products. there were more new inventions on show this year. here are some of them.a smart mirror can connect to the internet. you can get the latest news about the fashion world when you touch the mirror gently with your finger. and it can help you make good choices about the

17、 types and styles of clothes that best suit you. you can also send messages on the mirror.in the past, home robots could only do simple work like cleaning the floor or washing dishes. but a newly-made home robot can not only cook meals and serve food, but also play some musical instruments when you

18、want to have some fun.smart watches are made for kids. kids can use them to make telephone calls and even play games. they really like smart watches. their parents like them as well because they can know their kids locations through the signals sent by the smart watches. besides, kids can use them a

19、s common watches to read the time.one of the products made by dj1 is a drone-a plane that can fly without a pilot. this kind of drone is used in many fields. some drones have already been used at tourist attractions like dongchong, xichong, yangmeikeng and dapeng geological park in nanao. the drones

20、 allow the police to monitor and control the traffic flow during rush hours.thanks to the development of science and technology, our life is full of miracles. new inventions make our life smarter and more convenient.( ) 42. how many days did the third china electronic information expo last?a. one da

21、y.b. two days.c. three days.d. four days.( ) 43. which new invention can provide you with the latest fashion news?a. a drone.b. a smart watch.c. a robot.d. a smart mirror.( ) 44. which of the following statements is true according to the passage?a. you can send messages with a common mirror.b. a dro

22、ne is a plane that can fly without a pilot.c. robots can only do simple work like cleaning the floor.d. parents can know where their kids are through the signals sent by phones.( ) 45. in which part of the newspaper can you read this article?a. sports.b. science.c. culture.d. education.which do you prefer to use when you are studying, ipads or books? here is 46 survey about it.some