Network learning has increasingly become a important means for people to acquire knowledge and solve problems. But being smart online learners have its advantages and disadvantages.

First of at all, as smart online learners, we can make full use of the educational resources to broaden the horizon. Beside, we can take the initiative（主动）in our study by yourselves without time and space limit.

Of course, these disadvantage are as follows. Faced with all kinds of information on the internet, we can't tell the difference between the true and the false, that may be harmful to our study and life. On the other hand, online learning itself has some imperfections, make it difficult for us not be affected.

In conclusion, we should have a well understanding of its advantages and disadvantages and find a proper way to make our study more efficient.

4 . People think that smartphones and laptops are evidence of progress. A certain amount of online searching, for instance, can be good for your brain, and there are apps that can promote brain functions. Yet technology advancements also come with some unintended consequences.

Studies have shown that blue-enriched light from electronic things like smartphones can disturb the body’s internal clock and make it impossible for you to stick to a proper sleep schedule. Losing sleep has negative effects on your brain, such as bad moods, decreased attention and problems of memory.

Technology makes it much easier to get distracted. For example, you step away from an important project to check your smartphone. Teens, in particular, are more distracted than ever. A recent survey of 2,400 teachers found that most educators feel students are more distracted than previous generations. Some 64 percent agreed with the idea that today’s digital technology does more to distract students than to help them academically.

And technology makes people much more forgetful than they used to be. The new generation are actually more likely to forget what day it is or where they put their keys than people over the age of 55, according to a Trending Machine survey. In a press about the survey, Jo Patricia, a doctor, said technology was to blame. “This is a generation that has grown up multitasking by using technology and is often accompanied by lack of sleep, which results in high levels of forgetfulness,” she said.

People who rely on GPS to get around have less activity in the hippo campus, an area of the brain involved in both memory and direction. A study from the University of London even found that taxi drivers had a more developed hippocampus (海马，大脑记忆核心部分) than non-taxi drivers — because they are so accustomed to using spatial (空间的) memory, rather than relying on GPS.

Now that you’re probably terrified of the effects of technology, let us remind you that you do have the power to prevent it. Just log off every once in a while!

5 . We live in a town with three beaches. There are two parks less than 10 minutes’ walk from home where neighbourhood children gather to play. However, what my children want to do after school is pick up a screen — any screen — and stare at it for hours. They are not alone. Today’s children spend an average of four and a half hours a day looking at screens, split between watching television and using the Internet.

In the past few years, an increasing number of people and organisations have begun coming up with plans to counter this trend. A couple of years ago, film-maker David Bond realised that his children, then aged five and three, were attached to screens to the point where he was able to say "chocolate" into his three-year-old son’s ear without getting a response. He realised that something needed to change, and, being a London media type, appointed himself "marketing director for Nature". He documented his journey as he set about treating nature as a brand to be marketed to young people. The result was Project Wild Thing, a film which charts the birth of the Wild Network a group of organisations with the common goal of getting children out into nature.

"Just five more minutes outdoors can make a difference," David Bond says. "There is a lot of really interesting evidence which seems to be suggesting that if children are inspired up to the age of seven, then being outdoors will be a habit for life." His own children have got into the habit of playing outside now: "We just send them out into the garden and tell them not to come back in for a while."

Summer is upon us. There is an amazing world out there, and it needs our children as much as they need it. Let us get them out and let them play.

In modern society, online news media is becoming more and more popular. But online news media have both advantages and disadvantages.

The advantages of online news media are obvious. First of all, it is convenience to use online news media. Second, news spread quickly on the Internet. Third, we can read a variety electronic newspapers online, what is good for the environment. Therefore, we cannot ignore the disadvantages of online news media. It is difficult to tell whether what we read is real and fake on the internet. Even the worse, we cannot stop advertisements from appear suddenly.

Personally, despite their disadvantages, online news media have become a important part of our life. It is wise to learn to use them properly.

10 . Look for Friendship in Cyberspace

In so many ways, cyberspace mirrors the real world. People ask for information, play games, and share hobby tips. Others buy and sell products. Still others look for friendship, or even love.     1     Identity and appearance mean very little in cyberspace. Rather, a person’s thoughts — or at least the thoughts they type — are what really count. So even the shyest person can become a chat-room star.

    2     They’re looking for serious love relationships. Is cyberspace a good place to find love? That answer depends on whom you ask. Some of these relationships actually succeed. Others fail miserably.     3     Personal appearance doesn’t get in the way. But critics of online relationships argue that no one can truly know another person in cyberspace.     4     And they don’t have to worry about what their “nonverbal” communication is doing for their image. In a sense, they’re not really themselves.

    5     But not knowing a person is a big problem in a love relationship. With so many unknowns, it’s easy to let one’s imagination fill in the blanks. This inevitably leads to disappointment when couples meet in person. How someone imagines an online friend is often quite different than the real person.

So, before looking for love in cyberspace, remember the advice of Internet pioneer Clifford Stoll: “Life in the real world is far richer than anything you’ll find on a computer screen.”