The aye-aye, in the same family as people, monkeys and apes, is about 40 cm long, with a bushy tale about the same length as the body. The dark brown fur is long and woolly, giving the animal a rather shaggy(蓬松的) appearance. They are found only on Madagascar, an island off the coast of Africa. It lives in the tropical forests in the east and north of Madagascar.

    The aye-aye is mostly arboreal(栖息在树上的), but is sometimes seen walking on the ground. It's active during the night, looking around in the trees for food. The aye-aye is actually the largest primate(灵长类动物) active during the night. Large eyes help the aye-aye find its way about at night. During the day, the aye-aye sleeps in a nest in a tree. Aye-ayes spend almost the whole night travelling about and feeding.

    Aye-ayes live alone. Sometimes pairs are seen, but basically little is about their lives. They don't Icap and cling to trees like primates. They move about on all four legs.They occasionally make brief cries but are silent. Worms inside dead wood form the largest part Of the aye-aye diet. The aye-aye also feeds on fruit, eggs, and bamboo shoots.

    The front feet of the aye-aye are unique. All the toes are long and thin, but the third is exceptionally long. The aye-aye taps on the tree trunk and listens for movement as searches places "'here worms might-be located. It bites at the tree to make homes. then it uses its third finger to reach inside and hook out worms, The front teeth of the aye-aye grow continuously and are worn down by its eating at bark in its search for worms.

    Aye-ayes are close to be gone or totally gone. Because of deforestation (伐木), or forest destruction, the animals have therefore been forced to eat villagers' crops, and many aye-ayes been  have been killed while doing In addition. Some people on Madagascar believe that seeing an aye-aye is a sign that someone close to them will die, so they kill the animals on sight.

    What do you use to unlock your cellphone? A password? A fingerprint? Or simply a glance?

    On September 12, 2017, Apple introduced its iPhone X, which has an eye-catching feature—Face ID.

    With Face ID, Apple says, you can unlock your new iPhone by just looking at it. It is powered by a so-called TrueDepth camera system built into the front of the iPhone X.

    When the camera system sees a person's face, it uses 30,000 unseen dots to “map” the shape and outline of the face. A mathematical model of the face will then be created and stored in the phone.

    The next time the person looks at the iPhone X, the same dots are mapped onto his or her face and compared to the stored model. If the two match, then the phone unlocks. This happens in less than a second.

    Apple says the system is smart. If you change your hairstyle, put on sunglasses or makeup, or use the phone in the dark, Face ID still works.

    Although the technology sounds fancy, there are still concerns. For example, will Face ID work for twins?

    According to Apple, the chance of others to unlock your iPhone X using Face ID is one in a million. Face ID can tell the difference between twins, but the error rating（出错率）rises. So one would need to set a password then.

    Apple also emphasizes that Face ID only unlocks when you stare at it. It is what Apple calls “attention aware”. So the phone won't unlock if you are just glancing at the phone for the time. It won't work either if someone puts the phone at your sleeping face or your photo.

    In the U.S. state of Washington, a road called ^Interstate 90^ cuts through a wild, mountainous area to reach the city of Seattle. For the area's many kinds of animals, the busy highway greatly limits their movements. Crossing 1-90—as the road is called—is a risky but sometimes necessary act. But soon, animals will have a safer choice for crossing the road. They will be able to go above it.

    To help the animals, the state is finishing work on its largest-ever wildlife bridge. The 11-meter-tall, 20-meter-wide structure begins in the forest. It forms two arches above the highway, one for each direction of traffic. Workers are adding fencing and plants to help guide the animals across the bridge. Two-meter-thick walls will help block noise from vehicles below.

    The 1-90 Bridge is part of a growing number of wildlife crossings across the United States. Some are fences, some are overland bridges, and some are underpasses. They all aim to keep drivers and animals away from each other. Collisions between animals and drivers are rarely deadly to people. But they are often deadly to wildlife. In Canada's Banff National Park, studies have found that wildlife crossings reduce the area's animal-driver collisions by 80 percent.

    Most of the wildlife bridges are in western states. But experts have noted many other areas that have a need for such paths. Jen Watkins, whose organization has helped campaign for animal crossings, says finding for more crossings is "the number-one barrier."

    Patty Garvey-Darda of the U.S. Forest Service has worked on the 1-90 crossing from the start of the project. She says the $6- million bridge will one day pay for itself because the highway will not have to be fully or partly closed each time a large animal is struck. She said, ^"If you shut down Interstate 90, you shut down interstate commerce."

    Ahead of the summer travel season, airlines in the United States usually compete to sell tickets and fill seats. But the airlines that operate the grounded Boeing 737 Max planes have a new problem: there are not enough seats to meet the demand.

    The revenue(收益)is right in front of them. They can see it, but they can't meet it, said Mike Trevino. He is an airline industry expert for Southwest Airlines Pilots Association, The grounding of Boeing's 737 Max came after two deadly crashes in five months. Southwest Airlines is the world's largest 737 Max operator. The company has 34 of the planes.

    American Airlines operates the second-most, with 24. These planes have been removed from use until at least August, The grounding of the planes has led Southwest to cancel 160 of its 4,200 daily flights between June 8 and August 5.

    American Airlines will cancel 115 daily flights, or 1.5 percent of its total summer flights .Southwest only flies Boeing 737s. It had estimated $ 150 million in lost revenue between February and March 31--mostly because of MAX cancellations.

    The 737Max was grounded worldwide in March following a deadly Ethiopian Airlines crash. It came five months after a Lion Air crash in Indonesia. All on board both planes died.

    Boeing is under pressure to provide additional software. Experts are examining the original software as a possible reason for the crashes.

    Boeing must prove to worldwide regulators that the plane is safe to fly. That process may take more than 90 days. Planes in the United States are usually mostly full during the months of June, July and August.

    "I feel unlikable, lonely and hopeless," said Lisa, a bright teenager from a loving home. "It seems that nobody wants to become my friend. What's wrong with me?"

    Like Lisa, many of us experience loneliness. The truth is that all people, no matter what their age or character — even the most outgoing, wealthy and popular — experience loneliness at least sometimes. It's healthy and natural to want to be around people who care. After all, we've all heard "No man is an island." That's true. We all need others in our lives.

    Solomon, the wisest man who ever lived, explains that if we want friends, we must be friendly and reach out to others. But it has risk. Because we are often afraid of rejection (拒绝), many of us are unwilling to reach out to others. We take a safer way and wait for others to make friends with us. But if we want friends, we've got to get beyond this.

If making friends is your goal as well, you need to consider taking some measures (措施).

    Be willing to take the initiative (主动权). If you see someone whom you would like to know, don't wait for her to make the first move. Get close to her and begin a conversation. Let her know in a non­aggressive (无攻击性的) way that you are interested in being friends with her.

    Reach out to those who are lonely. When you see someone at school sitting alone, go over and talk to her. And don't let popularity decide whom you reach out to. You'll often be surprised at the beautiful qualities behind a shy appearance.

    Ask questions. Start your first conversation by asking this possible friend what she likes to do or asking about her family. Be sure to ask questions that cannot be replied with "yes" or "no". For example, don't ask "Do you have a dog?" Instead, say "So, tell me about your pets." Avoiding asking "yes" or "no" questions makes your possible friend not end your communication with a one­word answer.

    More primary care doctors in a community (社区)appear to lead to improved life expectancy for people living there, though a lack of such physicians across U.S. could be a cause of concern for overall population health in years to come.

    For the study, researchers looked at physician counts per 100,000 people in a range covering 2005 to 2015 in the U. S., along with life expectancy and specific causes of death. They found that an increase of 10 primary care physicians per 100,000 population was associated with a 51. 5-day increase in life expectancy, while an increase of 10 specialty physicians per 100, 000 population increased life expectancy by 19. 2 days. An increase in primary care physicians also was associated with reductions of many deaths including heart diseases and cancers.

    Along with those findings, though, the study said many communities did not have primary care physicians in 2015, with the decline in supply more prominent in rural areas than their urban areas. Many believe that a well-functioning health care system requires a solid foundation of primary care, however, payment difference between primary care and technical specialties continue to dispirit the U. S. primary care physician workforce.

    "Higher pay and lifestyle preferences lead most students to choose non-primary care fields, even when their hearts say primary care," the study said. "We must turn this trend around with practical changes in physician payment policy; no amount of superb primary care training or creative practice reform will prevent further declines in primary care physician, which will lead to worsening health for the United States."

    The study's researchers conclude that future research should focus on the "quality and cover of primary care, types of primary care physician training and service offerings, and effective access rather than just supply".