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    Exercise helps to keep us in good health. Doctors at the American Heart Association suggest getting at least 150 minutes of proper physical activity every week. Many people exercise for a few minutes every day or every other day. So, getting 150 minutes every week is easy.

    But what about those times when you are sick? If you do not feel well, should you keep following your exercise habit? Health experts answer these and other questions.

    Edward R. Laskowski is a doctor at the Mayo Clinic. He and other experts have a general rule of yes about exercising when you are sick.  It is usually fine to exercise, he explains, if your symptoms (症状)are all "above the neck". These signs may include a runny nose, a blocked nose, sneezing or a minor sore throat.

    Geralyn Coopersmith is a physical fitness trainer who has written several books on exercise and nutrition. Both Coopersmith and Dr. Laskowski suggest taking a break from exercising if signs of your illness appear "below the neck". Pay special attention to symptoms such as chest congestion, extreme cough or pain in the stomach.

    There are other symptoms that can tell you to avoid exercise. They include: a higher than normal body temperature, a sense of feeling extremely tired, and widespread muscle pain.

    Both Coopersmith and Dr. Laskowski suggest listening to your body. If you feel really bad, take a break and let your body rest. If you don't feel too bad, these experts both suggest reducing the amount of exercise. For example, if you usually run, take a quick walk instead.

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    Three years ago I worked for a few weeks as a doctor in a new dental clinic(牙科诊所）at Victor Harbor to the south of Adelaide and an hour further away than my usual workplace. My first day there was a driving to a new clinic and getting used to the clinical environment.

    As it was all new to me, I took off my rings: my wedding ring, and one that was an anniversary(周年纪念日)gift from my husband. I put them in a tissue(纸巾)and placed them beside my computer. During my lunch break, I noticed the tissue and thought that it did not look very clean and threw it into the rubbish bin. I went about my work and my day went well; I met new patients and felt that I had been productive

    Driving home at the end of the day, just moments before I reach that were missing. I felt the heat in my body rise, my cheeks(脸颊)burning red. I felt sick to my stomach.

    I spat an hour or so making calls, trying to find my rings. The first people I called were and clinical leader and they gave me a few phone numbers for cleaners I got in touch with already who managed the leaning services for the clinic, and she told me that the bins had already been collected.

    I knew nothing could be done now. I had lost my rings. Bu after two or so hours, I received the most amazing phone cal. The cleaner had gone through the bins and found my rings! I was so thankful to her, someone who had taken the trouble to go through the bins-which is not a pleasant task-to find my priceless rings.

    I worked at that clinic the following day, so I bought chocolates to thank this wonderful person. Unfortunately I did not get to meet her as she was not at work that day.

The bell(显示) the end of the period rang, interrupting our heated discussion.

Video games can be a poor influence if ________ in the wrong hands.

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    Welcome to the home page of the Photography World website. We offer a range of useful services for photographers and photography lovers.

    Camera Club

    Join our club and enjoy a range of benefits. You'll get invitations to our regular events, such as members' film shows, exhibitions and talks by experts. You can apply for Full membership, Associate membership or Junior membership. Full membership includes free entry to all events and 10% discount when ordering equipment online. Associate membership gives you half-price tickets to events. Junior membership (proof of age required) allows youngsters to enjoy the benefits of Full membership. Costs (per year)：Full membership 20, Associate 12, Junior 10. Most new members joined as the result of recommendations from current members.

    Advice Center

    Take advantage of our Advice Center. Ask our panel of experts your questions about cameras and photography. Whether you're looking for solutions to problems or fresh ideas for interesting photos, you'll get response here. Simply email your questions to advice@cameraclub.com or leave a recorded message on 0800-565656. We guarantee to send you a reply by email within five days. Please note that since we can't provide information about repairs to cameras, you should contact the manufacturer about these.

    Competition

    Our competition is held every year and is a great chance for new and experienced photographers to win one of our great prizes, which range from albums to keep your photos in to one-day courses or a set of state-of-the-art camera equipment. Entries can only be accepted from members. They can be sent in prints, on a CD or memory stick, or by email. Please note that photos can't be returned, so make sure you have copies. The topic — for example, wildlife,     transport, people — is announced each year here on the website when the competition opens.

I couldn't ______ what I had done to annoy my boss.

The policeman  (试图) to save the drown boy but he failed.

Tom has agreed to let me use his computer to surf the Internet，and________I’m treating him to a good dinner at the newly­built restaurant just around the corner.

It's quite_______ that we'll be in Spain this time next year.

How many American soldiers have been killed in wars?

每天早晨，他手上都拿着一个大圆板爬上弯道。(with的复合结构)

One of her jobs is to visit the countries the UN operates programmes.

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    Adventure seeker Emma broke her ankle when she fell awkwardly while climbing a rock and spent a week in hospital waiting for an operation on her foot. When she was sent home to recover under strict instructions not to bear any weight, she became so fearful of crutches (拐杖) that she didn't move for three weeks. "I tried crutches but I kept falling over and injuring myself. So I literally just stayed on the sofa all day," says Emma.

    She was gutted at the thought of missing the Wolf Run—a quarterly (季度的) event that she hasn't missed since 2014. "If you complete four Wolf Runs in a year, one in each season, you can get Alpha Wolf status," explains Emma. "This year was going to be my fifth in a row as an Alpha Wolf and I was really upset that I'd lose my status." So she was willing to try anything to get through the course—even with her injured ankle.

     "I was telling my friend that I was going to cancel, but he persuaded me to give it a go. Having something to aim for really kept me going." Emma completed the run wearing an iWALK2.0, which is a medically approved device and it basically functions like a hi-tech artificial leg, allowing users to walk freely. "I decided to get one and it completely changed my recovery. I could move around the house and start getting out and about again, which had a real impact on my mental well-being."

    On the day of the race, Emma was nervous but the sound of people cheering her on kept her motivated. Emma made it over the finish line in just under six hours and clocked up (达到) her 23rd Wolf Run in six years. "It was an incredible day and my determination to finish combined with the support I received along the way kept me going," says Emma.

到目前为止，演讲委员会已宣布了这些演讲的题目。

So far the subjects of these lectures the lecture committee.

What can we learn about the woman?