【推荐1】If a cheetah, a wolf and a well-trained human all entered a marathon, who would win?

The cheetah would definitely take an early _________. The wolf would probably pass the cheetah after a few miles. But at the end of the 26 miles, the human would be the first to cross the _________ line.

Humans have only two legs but a(n) _________ capacity for running. Our powerful lungs give us the stamina needed to run great distances. And because we can sweat, we can control our body _________ while we run. Why are we so good at running? Running was necessary for early human _________. Of course, we don’t often need to run for survival these days. All the same, running _________ to play an important role in human cultures all over the world.

Marathon running is perhaps the best-known example of human running _________. That is because it is a big business. Millions of people worldwide watch on television as elite runners _________ for millions of dollars. And, of course, businesses _________ products such as athletic shoes during the competition.

How does someone become an elite marathoner? The __________ runners of Kenya seem to have found the answer. Iten is a small farming town in Kenya’s western highlands. It is also home to seven of the world’s top ten marathon winners. Most of them are __________ of the Kalenjin tribe. They tend to have __________ bodies for running. Their slim bodies, long legs and short waists concentrate __________ where a runner needs it most — the legs.

And because Iten is 8,000 feet above sea level, the Kalenjini __________ an enormous lung capacity. They need it to get oxygen out of the thin air. This gives the Kalenjini an important __________ when they compete in races at lower altitude.

【推荐3】Short bursts of exercise can make you fit in the long term. To prove this, Gillen’s team randomly assigned participants to three _________. One rode an exercise bike at a moderate (中等的) level of _________ for 45 minutes, three times per week. A second group did three times _________ the 10-minute high-intensity workouts. A third group _________ a control and did nothing.

After 12 weeks, both exercise groups had _________ their insulin (胰岛素) resistance and also increased their _________ (as measured by their capacity to use oxygen during exercise) by about 19 percent. The gains were _________ between the groups, even though the group doing _________ workouts with high intensity intervals had spent only about 22 percent as much _________ as the group doing traditional longer workouts. But people in the second group do find these __________ interval exercise programs enjoyable enough to __________.

Turning to shorter workouts is not just a way to __________ time. It can also help you continue to make fitness __________ even when life gets in the __________.

“Let’s say you have exams coming up or your job is __________ and you only have a couple of hours perweek to exercise,” Androulakis-Korakakis says, “__________ feeling like your strength and muscle will __________, turning to a minimum-amount __________ can still help you continue __________ your body.”

“It’s hard to __________ that you don’t have 10 or 15 minutes that you can find. That’s just not checking your email one more time or getting off social media,” de Lannoy says.

【推荐1】In February 2015, then 7-year-old Bryce Schottel had been diagnosed with lymphatic cancer. He’d already been through three rounds of chemotherapy (化疗) and having a fourth one _________ him a lot. During that _________ time, his mother hoped that someone would act as Superman to _________ her son’s spirits, since we associate superheroes with _________ and kindness. So his mom posted his _________ online. Little did she know that a couple of days later, a Superman would really _________ her.

After _________ Bryce’s picture and story online, a policeman, Damon Cole, in Dallas _________ to help somehow. He decided to call Bryce’s family and ask whether he could visit Bryce or not. His family _________ agreed and couldn’t wait to see their son’s __________ . So, Cole drove 11 hours from Dallas to Bryce’s hometown of Smithton, Illinois, where he __________ the young boy at his home around 8 o'clock in the evening. He wore his __________ Superman costume as in the movies. Bryce and his mom couldn’t __________ someone had driven from so far away just to __________ an unknown boy.

Cole couldn’t leave without spending a bit of __________ time with Bryce. After all, he’d driven 11 hours from Dallas. The two __________ cards and enjoyed some video games together. Before Cole left, he gave the young boy a parting __________ , a Superman cape. Cole could hardly tell Bryce was __________ because he had such a(n) __________ attitude.

It’s not every day you get to meet Superman. But when you do, it’s guaranteed to bring __________ and hope.

【推荐3】I have been afraid of heights for as long as I can remember. When I was 11, my school built a leadership training center that had various challenges. The most_________of the all was called “The Leap of Faith”, where you had to climb a _________to a platform 1 meters high. Once there, you had to_________the platform and reach out to grab a rope. I had seen students do it and had sworn there was no way I would ever_________ it.

One day my teacher asked me, “Are you going to try?” I _________ it off and told him that he couldn’t pay me to do it. _________ he encouraged me until finally I agreed to do it.

I climbed up and when I got to the top, I was in shock and couldn’t _________. Seeing this, my teacher_________that instead of jumping off the platform and grabbing the rope, I just _________ on the edge and then slide down. I sat down, but still couldn’t bring myself to slide off the __________. I sat there for 20 minutes. Finally, with the__________of my class, I slid down.

When I finally reached the ground, I heard two boys__________me about it behind my back. So, I decided I wanted to__________again.

Over the next two weeks, I did all sorts of things to__________myself. I jumped off tables and did some high ropes stuff. One morning before school I went down to the __________ climbed to the top of the ladder, encouraged myself and then…I DID IT! I had never before felt so __________of myself.

I __________so much during that time. The most important thing was that sometimes situations are__________, but that doesn’t make them impossible. People will doubt you in life, but I have learned that __________is the best way to reply to people like that. So, always keep dreaming and don’t let your__________ get in the way.