1 . Life can take any turn at any time or movement. It is _________. One truth about life is that we can’t spend it alone to live the _________.

On March 16, 2020, my left leg was injured. The doctor _________ it a serious injury, and I would be _________ for three months. As a full-time social worker, I hardly had time to visit my home. However, my broken leg _________ all my work, which was bad and also good, giving me an opportunity to spend time with myself and my _________.

I was _________. How would I spend three months in bed at home? Early in my injury and before my operation, there were so many ups and downs in my confidence. So many times, negative thoughts _________ me.

I felt very depressed but each time I got _________ from my family and friends. I decided to change my __________ according to the situation. It was not so simple or easy. I began to practice thinking __________ in silence, read books, and talk with friends. I even planted various plants to help me heal. It was __________ to water them.

Eventually, I am fully __________, feeling relaxed. At the time of struggle and __________ situations, we feel the need of someone who can spend time with us. Their kind __________ gives us so much strength and support. They just meet in our heart and family, and just need our love and friendship.

2 . If you choose to be part of the world's biggest New Year's Eve party at the Times Square, here are some activities to make your experience memorable and pleasant.

Watch the Times Square New Year's Eve's Ball Drop

The famous Waterford Crystal ball, which can display more than 16 million colors, will be raised at around 18:00 to the top of the flagpole at the Times Square. At exactly 23:59, it will start its one minute drop to ring in the New Year. Those who get the choicest spots typically arrive before 15:00. By 22:30, it's nearly impossible to find a spot with a view of the ball.

Of course, if Ball Drop isn't your cup of tea, there are plenty of other ways to ring in the New Year in NYC.

Join the bike ride and dance

Participants in the annual New Year's Eve bike ride can join ranks with the skaters at the entrance to Washington Square Park at 22 :00, and then make your way through Manhattan before winding down at Central Park's Belvedere Castle at 23:45,just in time for an informal dance party with the group ( festival dress is needed), as Central Park's midnight fireworks display gets underway.

Celebrate New Year's Eve at the Comedy Cellar

Laugh your way into the New Year with the country's best comedians at New York's most famous comedy club. It will show the countdown and ball-drop festivities at the Times Square live on their 10-foot screen. Tickets are available online and there is a two drink minimum.

Get classy with the performing arts

For a high class night on the town, look to special New Year s Eve programming at performing arts centers like The Metropolitan Opera. Normally, the black tie Gala Dinner Package usually includes a post performance dinner and dance on the Mercedes Bass Grand Tier, where you will be able to see the midnight fireworks erupt throughout New York City.

3 . Natural lakes cover about 2.8% of Earth's non-oceanic surface. Despite the small percentage, they are very important to both regional and global ecosystems. However, lakes around the world, such as the Great Lakes in the United States, the Aral Sea and the Dead Sea in Asia and the Lake Chad in Africa, are disappearing and even have disappeared. Identifying the main factors of lakes' decline is of great value for global lake management and lake recovery, especially for the largest freshwater lake in China, Poyang Lake.

Located in eastern China's Jiangxi Province, Poyang Lake has a drainage(灌排) area of 162,225 km2，feeds a population of up to 44 million and annually supplies 17% of the water for the Yangtze River, the longest river in Asia and the third longest in the world. It also provides a home for millions of birds during the lake's low water stages in late autumn and winter, including 95% of the world's endangered white cranes. Moreover, the variations in the lake's water output directly affect the environments in the East China Sea.

However, since the beginning of the 21st century, Poyang Lake has experienced continuously extreme low water levels in autumn, which has put the threatened birds at risk of extinction.

Despite several efforts to explore the causes of the Poyang Lake's dryness, to date, there have been no studies that attempt to distinguish and quantify the contribution of each possible factor on the lake's recent low water levels.

Therefore, the objectives of my study are to quantify the contribution of each factor leading to Poyang Lake's dryness. These results are of vital value in characterizing the problems of the Poyang Lake and its related wetlands. They also can be applied to other large lakes in similar situations around the world.

4 . SpaceX launched its straight out-of-science fiction Starship several miles into the air from a remote corner of Texas on Wednesday, but the test flight ended in a fireball at touchdown.

The rocketship—50 meters tall and 9 meters wide—soared out over the Gulf of Mexico. After about five minutes, it reached an altitude of 12.5 kilometers. That's almost 100 times higher than the previous test flights. Then it turned sideways as planned and came back to Earth near the Mexican border. When it touched down, however, the rocketship exploded.

The entire flight lasted six minutes and 42 seconds. SpaceX broadcast it live on its website. Despite the crash, Musk, the owner of SpaceX, called it a “success” and tweeted, “Mars, here we come!”

SpaceX said that the rocket was precisely guided to the landing point. The fuel tank pressure was low, however, when the engines were successfully restarted for touchdown, which caused Starship to come down a little bit too fast.

Starship is actually the upper stage of Musk's moon-and Mars-ships. It will be carried on the top of a bigger rocket, known as Super Heavy, which is still in development. The entire vehicle will tower 120 meters—9.4 meters taller than NASA's Saturn V rocket that carried men to the moon almost three decades ago. SpaceX intends to use Starship to put massive satellites into orbit around Earth, besides delivering people and cargo to the moon by 2024 and Mars in 2026.

While accepting an award in Berlin last week, Musk said he's highly confident of a human flight to Mars in six years—“if we get lucky, maybe four years”. But Musk admitted for the first time after the test failure that his timelines could be too optimistic.

6 . Bikes are the most common means of transportation in our daily life, but have you ever noticed that a man’s bike is quite different from a woman’s bike? The traditional difference between a man’s bike and a woman’s bike is the top tube design. A man’s bike would have a top tube going straight from the top of the head tube to the top of the seat tube, while a woman’s bike would have a top tube that connected to the seat tube somewhere lower down. This was originally to make it possible to ride a bike while wearing a skirt without exposing any morally offending body parts while mounting the bike. A consequence of this is that traditional women’s frames are weaker than men’s, which is why performance-oriented bikes all look the same regardless of the gender of the rider.

If you’re looking for a performance-based difference, then women often have shorter upper bodies and arms than men, so some manufacturers adapt to that by building frames with shorter top tubes. Others merely think a “cute” paint scheme (组合) on the smaller sizes of their standard frames will be called a woman’s bike. Do note that the difference from one person to another can easily be bigger than the differences between the man’s bike and the woman’s bike standard. There are also a few other ways of fitting a bike to the rider. For example, handlebars can be replaced for some adjustments of riding position.

While it’s nice to have a well-fitting bike, for an ordinary rider it’s not as important for a MTB (山地车) as it is for a road bike. On a MTB the rider spends more time out of the saddle (鞍). While riding a road bike the rider spends more time on the saddle, so the position has to fit better. And if it’s just for wandering around the block, then most riders would prefer a “woman’s” bike. They will usually provide a more upright riding position, which is more comfortable for casual riding.

9 . Facebook is a habit forming activity， but users who spend a lot of time on the site say they feel less happy with their lives.

Researchers from University of Gothenburg say that many users log in as soon as they turn their PCs on and that the behavior can develop into an“addiction”. People in low income groups and the poorly educated are particularly at risk. Up to 85% of users say that they use Facebook daily and half say they start up Facebook as soon as they open their web users. Half fear that they are not“on top of things”if they are not logged into the site, and 25% say they feel”ill at ease”if they can't log in regularly.

The Swedish survey showed the network had its dark side.“Face-booking may become an unconscious habit. A majority of the respondents(受访者) log in every time they start their web browser(浏览器). This may even develop into an addiction,” says Leif Denti, doctoral student of Psychology at the University of Gothenburg.

People with low income and low-educated individuals spend more time on Facebook. Women are generally more active than men on Facebook. Users with low income and low education use Facebook more than other groups. Within these groups，users who spend more time on Facebook also report feeling less happy and less content with their lives.

The other surprise about the network is that although a huge amount of personal “ news”is traded through the site,it tends to focus on the positive.“ Most of the content they share has something to do with major events, positive events and when feeling good,”says Leif Denti.