Of all the websites,one that has attracted attention recently is _ .Most of this attention has come from the media and tells every reason why the website should be shut down.The threat of internet predators is indeed a tough reality,but shutting down the site is not the answer.If _ were shut down,another site would quickly take its place.Therefore,the right way is to teach teens how to use the site safely and educate them about who may be predators and how to avoid them. The key to staying safe on the Internet is to make sure that your profile is secure.The simplest way is to change the privacy setting on your profile to "private", which protects your information so that only the people on your friend list can view it.Although this is effective,it is not perfect.Predators can find ways to view your profile if they really want to,whether through hacking in or figuring out their way onto your friend list.Thus,you should never post too much personal information.Some people actually post their home and school addresses,date of birth,and other personal information, often letting predators know exactly where they will be and when.The most information that is safe is your first name and province.Anything more is basically inviting a predator into your life. Another big issue is photos. I suggest completely skipping photos and never posting a photo of a friend online without asking permission. Most importantly, never,under any circumstances,agree to a real-life meeting with anyone you meet online.No matter how well you think you know this person, there are no guarantees that they have told the truth.But you could feel free to chat with people you meet on the site, but just remember that not everyone is who they say they are.Hopefully,the next time you edit your profile,you'll be more informed about the dangers of internet predators and take the steps to defend yourself. Kids can avoid web predators successfully by_. A) attracting more public attention B) shutting down the website "myspace . com" C) showing the kids ways to try other sites D) recognizing and getting away from them
D
I just mailed the chicken and the egg, each in its own separate packaging, and kept careful track of when each shipment was sent from a post office in Cambridge, Massachusetts, and when it later arrived at its intended destination inprefix = st1 /New York City. In mailing the chicken, I was careful to stick to the restrictions described in the American Postal Service's Domestic Mail Manual 57. This version of the Manual states that: "Adult chickens must be sent by Express Mail. The containers used must pass the standards in International Safe Transit Association Test Procedure 1A; be strong enough to endure normal handling; and the number of birds must not be more than the container's limit." I mailed the chicken in a wooden box got from a colleague who does research with birds, and mailed the egg in standard packaging obtained through an industrial supplier. I posted both the chicken and the egg at 9:40 am, on a Monday morning, from theHarvard Squarepost office, inCambridge,Massachusetts. The staff there told me that this was the first chicken anyone had mailed from there in recent memory, and perhaps ever. The intended destination for both packages was the James A. Farley General Post Office, which is located inManhattanright next to Penn Station. I took the subway from Harvard Square to the Boston train station, and from there boarded a train to New York City, a distance of about 320 kilometres, arriving that afternoon at Penn Station. I immediately went to the post office, to await the arrivals of the chicken and the egg. The James A. Farley General Post Office is open 24 hours a day, so I was able to wait there until both items arrived. That day, Monday, neither the chicken nor the egg arrived. The next day, Tuesday, neither the chicken nor the egg arrived. The chicken arrived at 10:31 am, Wednesday. The staff at the post office told me that this was the first chicken anyone had mailed to the post office in recent memory, and perhaps ever. The egg arrived that same... We can learn from the passage that Penn Station is _ . A) in New York City B) inCambridge C) near Harvard Square D) nearBoston
A
Q: Smoggy weather has become common in China. But these days, air pollution levels in the north eastern city of Harbin surpassed the previous record levels. The city was essentially shut down after PM2. 5, fine Particulate pollution that is considered hazardous . reached levels of 1000 micrograms per cubic meter-40 times the safety level remended by the World Health Organization. Schools, motorways and an airport were closed on Tuesday as visibility in some areas of the city dropped to less than 10 meters. Photos from Harbin showed residents covering their mouths with masks and scarves, and moving like ghostly shadows through the fog. Cars and motorcycles are moving slowly as traffic came to a standstill with traffic lights barely visible. . Just days previously , the World Health Organization's International Agency for Research on Cancer (IARC) classified air pollution as a carcinogen . It stated that there is " sufficient evidence" that exposure to outdoor air pollution causes lung cancer and also linked it with an increased risk of bladder cancer. It's said that exposure has increased significantly particularly in " rapidly industrial countries with large populations". "The air we breathe has become polluted with a mixture of cancer-causing substances" , Dr Kurt Straif , head of the IARC said in a press released. "We now know that outdoor air pollution is not only a major risk to health in general, but also a leading environmental cause of cancer deaths. " On the Chinese social media site Weibo , many users complained about the pollution and shared their concerns. References to "feed people with smog "have become popular on Weibo and there is a sarcastic play on the expression "serve the people" , as the two have a similar pronunciation. "The impact of air pollution on people will be gradual. There won't be a sudden outbreak of symptoms, but normally three to five days after the smoggy weather occurs, there is a peak in the number of people seeing doctors, " Deng Ying, a doctor at the Second... As thick smog has become a common scene in Harbin, _ A) students there can go to school as usual B) residents in the city can see as far as 20 meters C) traffic lights can be easily visible D) the urban traffic has been seriously influenced
A: D
*Question*
Have you ever stayed up late? If so, you know that not getting enough sleep can leave you tired and grumpy . Not sleeping enough can also make it harder to think clearly the next day. Sleep experts have long known that getting a good night's sleep is important. It helps kids perform their best during the day. A recent study shows that sleep helps improve problem--- solving skills and creative thinking. For the study, two groups of volunteers answered a math problem. The group that slept for eight hours solved the problem correctly more often than the group that did not get enough sleep. While you sleep, your brain is busy doing its "homework". It sorts out information from your day. Getting enough sleep each night can _ your brainpower. That will help you do your best in school. Experts say that, in return, can lead to better grades. What did the results of a recent sleep study show? A) People who sleep enough are good at math B) Sleep is important for learning C) If you get enough sleep, you don't have to do your homework D) Adults need more sleep than kids
**Answer**
B