任务型阅读。
As more students begin to use computers for a long time,more of them are feeling eyestrain(视疲劳).Just a few hours in front of a computer screen can make a person's eyes feel tired and painful.A number of doctors have studied this growing problem and have found ways to deal with it.Following their advice will help keef computer users more comfortable.Here is some advice.
The light in a room shouldn't be brighter than the computer screen itself.In many classrooms,however,the lights are far brighter than they should be.Students can prevent some of this light by wearing baseball caps if they are allowed at school.
A special computer screen should be used to cut down on bright light because it is especially tiring to the eyes Another problem to avoid is the wrong kind of contrast(对比).It is best to have dark letters on a light hackground.This causes less eyestrain than light letters on a dark background.
Students should he seated so that they are looking down at the computer screen rather than straight a head,which is a far more tiring angle(角度).The top of the screen should be a little lower than the top of the head.
The length(长度) of time students spend in front of a computer screen leads greatly to eyestrain.Students should rest a while by looking away from the screen every fifteen to twenty minutes.During that time they should either close their eyes or look at something at a distance.Long-term computer use can dry out the eyes,so students shouht remember to blink(眨眼)often while in front of the screen.
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用所给动词的正确形式完成短文。
Have you ever heard of Dididache? Dididache(嘀嘀打车),a taxi-hailing smart phone app(应用程序)which1.(believe) to be created by Teneent,has recently appeared in Xiamen,and more than 700 taxi drivers in the city2.(use) the app.
The app shows the real-time locations of taxis on map using the GPS technology(技术)and3.(make)it possible for users to hail(招呼) a taxi on their smart phones.The users' request will he sent to the nearest taxi drivers wh04.(decide) whether to accept the order or not
Taxi-hailing apps are very popular in Beijing,Shanghai,Hangzhou and Nanjing,having thousands of users.However,Xiamen's taxi-control departments doubt its helpfulness and have said it may not be suitable for the city.
The app has been criticized(指责) for5.(disturb) market order,and creating difficulty for passengers who do not use the app6.(hire) a cab(出租汽车).Many users say that they are only useful when most taxis are idle(空驶),and hiring a taxi can still be challenging during bad weather and rush hours.Can this app be in use for long? Technology might make a great difference to our life.Let's wait ang see.
Health officials in South Korea reported that another person died because of an________(know) virus.
The poor will be offered some________(much) food and clothes.
It is reported that a________(Germany) airline crashed and caused the heavy loss.
English now is the most________(wide) used language in the world.