We spend a lot of time studying what we eat, but it turns out that when we choose to eat the very last meal of the day may also matter.

    Recent studies found that food was processed by the body in different ways depending on what time of day it's consumed. This might be because of physical activity, changes in body temperature, biochemical reactions and absorption and digestion of food.

    The best time to eat dinner depends on when you get up and go to bed, as well as if and when you eat your other meals. "Breakfast sets you up for success," Planells, a nutritionist, says. "If you don't eat breakfast, by lunchtime you're starving, and by dinner any healthy eating plans are out the window."

    Researchers also found that meal timing had an influence on human metabolism(新陈代谢). They studied a small group of people carrying extra weight and found that those who ate their last meal by mid­afternoon had increased fat burning at night.

    Eating early also seems to be the perfect time for blood sugar control. "Starting around 3 pm, blood sugar control is worse than it is in the morning, meaning that if you ate the same meal at 3 pm as you did for breakfast, your blood sugar levels would rise higher, despite the fact that you ate the same amount of food," Planells says.

    A 10­week study of "time­restricted feeding" looked at what happens to body fat when people limited their meals to a shorter window of time. Researchers found that people who ate breakfast 90 minutes later than usual and ate dinner 90 minutes earlier than usual lost more than twice as much body fat on average as those in the control group, who ate their meals as they normally would.

    There's a world of difference between a horror movie and a comedy—the former scares you half to death while the latter leaves you rolling on the floor with laughter. But try watching them without the background music and you just might decide they're not so different after all. Music and movies have been closely connected since the beginning of the film industry—even before the voices of actors were recorded. In movies, music helps to provide a sense of time and place, convey ideas about the characters and, most importantly, draw emotions out of the audience.

    Studies have long shown that our heart rates and anxiety levels rise and fall depending on the speed of the music we hear. Using this knowledge, composers use sudden changes in film music speed to create fear among audiences. Slowing the speed of the music will have the opposite effect, bringing about a sense of peace or a dreamlike quality. The use of dissonant (不和谐的) tones and noises is another technique that heightens tension. Humans naturally become unnerved when we hear dissonant sounds because such noises are usually associated with danger, like those that animals make to warn against predators (捕食者).

    As crucial as it is, the best film music is subtle. All that audiences are supposed to feel is a heightened sense of emotion—they shouldn't realize what's causing it. Only when the music is taken out of the film should audiences understand its effects.

    In keeping with this principle, some filmmakers are even using what's called "infrasound" (次声波) to arouse fear. While we may not be able to hear it because its frequency is below the range of the human ear, infrasound has been proven to cause anxiety, tremble and even sorrow. For example, infrasound was used in the soundtrack of the 2007 horror movie Paranormal Activity, and audiences reposed extremely high fear levels despite the 1ack of action throughout the movie. "It doesn't affect everyone equally," said British science writer Philip Ball, author of The Music Instinct, but he predicted that "we will see more of it used in movies in the future".

Once,in a lovely garden,lived the most beautiful butterfly in the world.She was so pretty,and had won so many beauty contests {#blank#}1{#/blank#} she had become very proud.One day,the naughty cockroach(蟑螂)got fed up with her showing off,and decided {#blank#}2{#/blank#}(teach)her a lesson.

She went to see the butterfly,and in front of everyone she said that the butterfly wasn't really that {#blank#}3{#/blank#}(beauty),and that the butterfly only won the competitions because the judges had been paid.In {#blank#}4{#/blank#}(real),the cockroach was the most beautiful.

The butterfly was {#blank#}5{#/blank#}(anger) and said to the cockroach,"I will beat you in a beauty contest,with whichever judges you yourself choose."

"OK,I accept.See you on Saturday," answered the cockroach,and left without {#blank#}6{#/blank#}(wait) for a reply.

That Saturday everyone went to the beauty contest.The butterfly {#blank#}7{#/blank#}(arrive) completely confident of victory until she saw {#blank#}8{#/blank#} the judges were:cockroaches,worms and beetles.All of {#blank#}9{#/blank#}(they) preferred the ugliness and bad smell of the cockroach.

The butterfly was left {#blank#}10{#/blank#}(cry)and disappointed,wanting never to enter another beauty contest in her life.Fortunately,the cockroach forgave the butterfly for her pride and they became friends.

High on the Qinghai-Tibet Plateau {#blank#}1{#/blank#}(lie) China's "water tower" Sanjiangyuan. It is home to the headwaters of China's three rivers: the Yellow River, the Yangtze River, and the Lancang River. It is the three rivers {#blank#}2{#/blank#} provide water for about half the population of China. However, human activities are putting this ecosystem {#blank#}3{#/blank#} risk. Hopefully, though, we can repair this damage. In 2016, the Chinese government established Sanjiangyuan National Park in Qinghai Province. The park, {#blank#}4{#/blank#}(schedule) to open in 2020, has increased the area's green coverage and attracted more wildlife. The local government has also made great efforts to improve biological diversity. The success of Sanjiangyuan will mark the start of a {#blank#}5{#/blank#}(green) future. With Sanjiangyuan {#blank#}6{#/blank#}(take) the lead, nine other regions in China{#blank#}7{#/blank#}(choose) by a field conservation station to carry out projects over the past three years, {#blank#}8{#/blank#} will form a national park system together. The idea of a national park system is still new in China, but {#blank#}9{#/blank#}(it) realization is urgent. After all, building an ecological civilization bears great {#blank#}10{#/blank#}(important) in the development and progress of human civilization.

The Netherlands is the only country in the world with more bicycles than residents. By 2022, the Netherlands has had a total of about 23 million bicycles, with an ownership rate of 1.35 bikes per person. One study published by the National Institutes of Health (NIH) reports that in the Netherlands cycling prevents about 6,500 early deaths each year, and that Dutch people have 1.5 years longer life expectancy (预期寿命) due to cycling. 

"The time spent cycling was about 74 minutes per week for Dutch adults aged 20 to 90 years old. The time was fairly stable over adulthood and reached its apex in the early days of retirement, in one's 60s. The death rate reduction, which was a direct result of the average time spent cycling for a certain age group, was therefore also the highest among the seniors who just retired," said Jeremy Smith, an expert from NIH.

What is it that makes cycling so beneficial? Obviously, cycling is a form of exercise. It is a great form of cardio (有氧的) exercise, which gets your heart pumping and helps strengthen the heart muscles. Doing cardio exercise may also help lower your blood pressure. 

Furthermore, solid evidence proves the link between cycling and better thinking skills. Even younger adults claim that a bike ride helps shift their thinking to a higher level — and research backs them up. In one small study, young men are required to cycle for 30 minutes every day for 3 weeks. They also completed a series of cognitive (认知的) tests before and afterward. After cycling, they scored higher on memory, reasoning and planning, and they were able to finish the tests more rapidly than before.

Besides all the benefits mentioned above, cycling, as many Dutch put it, is a way of life. In their simplest form, bikes are tools for travelling. But they're so much more. They are cognitive improvement, environmental protection, satisfaction and an expression of freedom. They bring people of the same passion together and connect them to a greater journey of life.

More than 50 years ago, my dad planted {#blank#}1{#/blank#} evergreen tree.He watered it and cared for it.A few {#blank#}2{#/blank#}(year) later, when it grew to about 3 feet tall, he placed its first set of Christmas lights on it.Thus our tradition began.Every Christmas ever since, this tree has lit up our neighborhood corner.

Dad passed away in November 1991.With all the emotions of his {#blank#}3{#/blank#}(pass),Thanksgiving came and went.When the topic of the tree {#blank#}4{#/blank#}(bring) up, Mom said,"Not this year."But my brother, sister and I said,"Dad would want it to be done,"so the following weekend,we {#blank#}5{#/blank#}(decorate) the tree together {#blank#}6{#/blank#} memory of him.

The tree now stands about 40 feet tall, and we have to use a beautiful cherry lift.{#blank#}7{#/blank#}(put) the top lights on.We turn the lights on the evening after Thanksgiving,{#blank#}8{#/blank#} send out light each night until New Year's Day.People drive by slowly, taking pictures or simply {#blank#}9{#/blank#} (enjoy) its beauty.Then in spring we pack the lights {#blank#}10{#/blank#}(safe) away for the next year.