To our surprise, the concert prepared by the students turned out more successful than we (think).

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We all know that exercise is good for your health, but some kinds of exercise may be better than others.

Running, for example, may help to protect against heart disease and other health problems. Running may also help you live longer. Researchers say it is not important how far you run. It also does not matter how fast or even how often you run. As advertisements for the running shoes Nike say, "Just do it."

Recently, researchers studied more than 55, 000 adults. About one fourth of the adults reported running regularly. The study found these runners were considerably less likely than non-runners to die of any form of disease, including heart disease. In fact, the runners usually lived three years longer than the non-runners.

This study lasted 15 years. During that time, more than 3, 400 of the individuals died. About 1, 200 of the deaths were linked to heart disease, a heart attack or stroke. Compared to non-runners, runners showed 30 percent lower risk of death by any causes. Also, runners compared to non-runners showed 45 percent lower risk of death by cardiovascular (心血管的) disease.

The runners in the study ran between 10 and 16 kilometers per hour. Slower runners, and those who only ran once or twice a week, were helped nearly as much as those who ran faster and further. Researchers looked at the running over time and found that persistent runners(over six years) showed the biggest benefits.

To stay healthy, doctors suggest that adults up to age 65 do 150 minutes of moderate (适度的) exercise every week. They say these individuals need 75 minutes of energetic exercise, like running, every week for good health.

假设你是李华，将参加主题为"Let's Ride Bicycles"的英语演讲比赛。请撰写一份演讲稿，主要内容包括：

1）目前汽车带来的空气污染和交通堵塞等问题；

2）骑自行车的益处，如节能环保、有利健康等。

参考词汇：低碳生活（low-carbon life）；节能（energy saving）

注意：

1）词数 100 左右；

2）可以适当增加细节，以使行文连贯；

3）开头语已为你写好。

Good morning, everyone,

    I am Li Hua. The topic of my speech is "Let's Ride Bicycles".

    ……

    Thank you!

听下面一段独白，回答以下小题。

The determined look in their eyes told us that nothing could make them         .

To read (原作的) novels in English is good way to learn English. （根据汉语提示单词拼写）

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    When I was growing up, Mother's Day was as important as Christmas.

    The energy around the house was always positive, mostly thanks to my father who made sure that his kids appreciated their mother. We would clean the house, and Mum got breakfast in bed in the morning and didn't have to lift a finger all day. And in the evening, we went to a restaurant for a traditional Mother's Day dinner.

    What I learned from my father over the years, was that no matter what, he always put my mother before himself. He absolutely loved her and never let her forget that.

    I maintain(保持) my father's Mother's Day tradition with my wife. Growing up, I learned that showing affection to the woman you love or who gave birth to you is an important part of life. You see, it goes both ways, and the love you have for your mother comes back to you again and again.

    Believing that and feeling it when you can may keep you from being lonely, even if your mum isn't close by or has passed away. There are a number of us who no longer have a mother in our lives, and truth be told, there are often times when I wish my mum were still here to comfort me. So instead, I remember the times she did just that. It makes me smile, and somehow, those memories of a more simple and loving life give me the comfort I'm looking for.

    If you are mum-less, you too should find a deserving woman in your life and celebrate Mother's Day with her. If you don't know anyone, there are plenty of lonely mums in rest homes who would enjoy your company for a couple of hours. The visit will make both of your days, and perhaps your lives, a little bit better.

It is illegal for a public official to ask people for gifts or money exchange for favors to them.

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Your 2018 Reading List, Provided by Bill Gates

    Most of us can't live like billionaire Microsoft co-founder Bill Gates, but we can read like him. Gates recommended four books in 2018—though some were published earlier.

    Leonardo da Vinci, by Walter Isaacson (2017)

    The bestselling biographer of Steve Jobs and Albert Einstein researched deeply into da Vinci's contributions beyond art, highlighting the breadth of his scientific, technological, and creative output. “Leonardo nearly understood almost all of what was known on the planet at the time. That's mostly because of his curiosity about every area of natural science and the human experience,” said Gates.

    The Best We Could Do: An Illustrated Memoir, by Thi Bui (2017)

    Gates calls this graphic novel “really impressive”. Bui is the daughter of Vietnamese refugees who came to America after the fall of Saigon, and becoming a parent inspired her to look into her own parents' miserable history. “I was struck by how the experiences Bui illustrates manage to be both universal and specific to their circumstances,” said Gates.

    Lincoln in the Bardo, by George Saunders (2018)

    Saunders, a long-time short story writer, won high praise for this novel. The book imagines the ghosts that haunt (萦绕) the basement of Willie Lincoln, Abraham Lincoln's son, who died at 11 in real life. “Willie's death after the Civil War made the president have a new understanding of the grief he's creating in other families by sending their sons off to die in battle,” said Gates.

Origin Story: A Big History of Everything, by David Christian (2018)

    This new book is by the creator of Big History, a free, online social studies course. It traces history in wide, sweeping movements, starting with the Big Bang, and it provides, in effect, a short course in modern science. This is a brief history of the universe. “David gets a little stuck on the current economic and political problems in the West, and I wish he talked more about the role innovation will play in preventing the worst effects of climate change,” said Gates.

虽然有些数学题十分难，但是绝大多数都非常简单，而且我已算出了一些题。

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    On Friday, Germany's telecom regulator(电信业管理者), the Federal Network Agency, announced that a number of children s smartwatches, designed for ages 5 to 12, can allow someone to remotely tap into the watch s microphone and secretly spy from remote places. The regulator isn't just worried about the potential of people spying on children-it's worried the devices(设备) can be used to spy on anyone.

    And in Germany, it's illegal to record private conversations without permission. "According to our investigations, parents were using the watches, for example, to listen in on their children during class, said Federal Network Agency President Jochen Homann in a statement.

    Smartwatches that make phone calls, like the Apple Watch, are legal in Germany. The problem with many of the children's smartwatches, however, is that the devices have a classic spying function, similar to a baby monitor, which can be easily activated (激活) just by using an app.

    The German regulator is so serious about destroying these devices. It's asking citizens to document the watches' destruction and file evidence online. Once the watches are destroyed, the regulator will provide a "certificate of destruction," confirming the deed was done.

    This isn't the first time the Federal Network Agency told German citizens to destroy a consumer device. The regulator once prohibited the doll "My Friend Cayla", which was fitted with radio transforming technology that could allow children to be spied on.

    Remind tech producers: The German government won't just ban devices that can spy on anyone, they'll demand the devices be destroyed with hammers (or whatever means of destruction one prefers) — even if they're dolls.