1 . Trackers on Ice

Just because a scientist puts a GPS tracking collar on a wild polar bear does not mean the animal will willingly keep it on.   _______, these huge collars are purposefully loose so that if one becomes annoying, a bear can _______it. But scientists have now found a way to use signals from the discarded(丢弃的)devices.

“These dropped collars_______would have been considered garbage data,” says Natasha Klappstein, a polar bear researcher at the University of Alberta. She and her colleagues instead used_______from such collars, left on sea ice in Canada's Hudson Bay, to track the ice itself. For their study, published in June in The Cryosphere, the researchers _______twenty collars that sent movement data consistent(与······一致的)with ice drift rather than polar bear _______between 2005 and 2015. The resulting records of how melting ice typically drifts in Hudson Bay are unique; there are no easily _______on-the-ground sensors, and satellite observations often cannot _______capture the motion of small ice sheets.

The team compared the discarded collars' movements with widely used ice-drift modeling data from the U.S. National Snow and Ice Data Center (NSIDC). Collar data indicated that the NSIDC model underestimates the speed at which ice moves around in Hudson Bay--as well as the overall _______of drift. Over the course of several months the model could drift away from an ice sheet's location by a few hundred kilometers, the researchers say.

This means the bears may be working harder, when moving against the direction of the ice, than scientists had   ________ .“Since we're underestimating the speed of drift, we're likely underestimating the energetic effort of polar bears," says Natasha Klappstein. The research reveals________insight (洞悉) into how highly mobile ice moves. As melting increases in coming years, such ice will likely become more ________farther north, in the central Arctic. Scientists had known NSIDC data could underestimate drift speeds, but “any time we can find a data ________,it is a good thing.”

Plus,such data could improve predictions about how oil spills or other pollutants may spread in seas ________ with drifting ice, says Walt Meier, a senior NSIDC research scientist,who was not involved in the study. The findings may even ________future NSIDC models. “It's a really nice data set,” Meier says."And certainly one we’ll take consideration.

2 . When I was a young boy growing up in North Dakota, my grandparents were farmers; And I remember the huge garden that my Grandma_________．I promise you it was about 4,000 square metres．Well, _________it seemed that way to me! She _________ the garden all by hand, with a hoe(锄头) and some water．Each spring the garden took shape from cold flat earth, which she changed through much hard work into rows of hills ready for _________．

I especially remember _________ Grandma plant potatoes．Grandma had _________ potatoes from last year．She stored them with the rest of the harvest in the outdoor cellar(地窖), where vegetables were kept safely all _________, When spring came, we _________ last year's potatoes and planted each piece into a hill of soil in the garden．I thought we would never _________ the end of the planting work even though everybody was helping!

Before long the garden became fully __________ because of sunny days, warmer temperatures and rain．__________ it needed lots of hoeing and watering by Grandma and her helper to have a harvest．It provided vegetables throughout the summer, until the final __________ when cold weather set in．

By the time Thanksgiving dinner __________, the ground at my grandparent's farm often would be covered with snow and we'd be __________ for a long winter．Warm inside the house, around Thanksgiving dinner, we looked through windows at bare(光秃的) tree branches(树枝) in the __________ garden．Our whole family would __________ potatoes and other vegetables from the __________．And of course wonderful pumpkin(南瓜) pie…I can smell it now! It's __________ how a pumpkin pie can make me __________ years of Thanksgiving dinners, and how that warmth __________ in my heart．

3 . Isn’t it amazing how you never have to water your weeds or nurture (培育) them and they still give you an unwanted crop?

I can remember as a young boy my grandfather showed me how to _______ this annoying weed called Bermuda grass. It was _______ work and it would really _______ if you didn’t get it out by the _______. More recently when my wife and I bought our first home about 8 years ago, what I had to deal with was this certain part of weeds _______ to the Bermuda grass, which would also spread wildly.

After getting the inside of our home _______, it was time to work on the outside. On my hands and knees I_______ attacked the weeds with a small hand spade getting each one_______ by the roots. Just this Spring I realized that one particular weed was _______ but another one was in full force. So again, I got ________ on my hands and knees and got to work ________ them from my yard. When I was ________, my yard was better off.

Sometimes our life can be so similar. We all have weeds in our life. These weeds can be challenges, setbacks, or________ beliefs, and the list can be ________.

The ________when dealing with these weeds of ________ is to get to the root of it and remove them one by one out and eventually you will ________ this round. And when another crop of weeds ________, deal with them directly ________ they spread, because now that you know what to do with them by getting to the root of it, it will give you more courage and ________ the next time a problem arises.

4 . My local supermarket is always busy. The first parking space I found was convenient, but I’d noticed a woman in a blue car _________ for a while. As I was _________, I let her have it. On the _________ of the car park I backed into the next available spot — it was a tight fit.

Pretty soon, I’d made my way through the supermarket and was back in the fresh air. Feeling good, I _________ my purse change into the hands of a homeless man and helped a _________ woman reverse park (倒车).

Just as I _________ my car, I saw the woman I’d let have my car space _________. She was giving a mean odd _________— half puzzled, half intent (热切的). I smiled and wished her a pleasant day. As I squeezed back into my car, I _________ the same lady looking in at me. “Hello,” she said, hesitantly. “This might sound crazy but I was on my way to ____________ some of my mother’s things off at the charity bins.” “You are just so much like her. You helped those people, I noticed, and you seemed so happy.” She looked at me meaningfully and passed a box in through the ____________, “I think she would like you to have it.” Shocked, I took it from her ____________. She smiled and walked away.

After a pause, I opened the box. ____________ was a beautiful gold necklace with a large grey pearl. It was the nicest gift I’d ever received, and it was from a complete ____________. The necklace was around my neck, a warm ____________ of human kindness.

5 . The View from the Slow Lane

As we pulled into the driveway, I noticed that something seemed different about my mom. She was _______away from me, her shoulders dropped and her hands relaxed. I parked the car and she turned toward me.

“Okay, we’re home,” I said, _______that now was her time to get out and let me be on my own. She sniffled and brushed her hair behind her ears to reveal her bloodshot eyes and moist cheeks. She had been crying.

“Mom!” I whined (嘀咕着说), surprised by the tears running down her face. “Why are you crying?” I asked, _______I already knew the answer.

I had just got my _______, which I’d been looking forward to for months. I was free — able to drive myself where I needed to go. But now that I had it in my pocket, I suddenly felt _______. I had been so quick to grow up, completely ignoring the emotions that my mom must be experiencing with her firstborn _______adulthood.

“My baby boy is growing up too fast,” she _______to say between deep breaths.

My heart ached. I hated to see my mom cry, and I hated more that I had been so ignorant toward her _______. I had been counting down the days,_______waiting to enter the next stage of my life, ________she counted down with fear and headache. The ________and freedom I had previously felt were gone, replaced by an odd sense of mourning.

We hugged. Then she looked me in the eye and told me to drive carefully. “Of course I will,” I reassured her. She unbuckled her seat belt, opened the door, and stepped out. I waved goodbye and pulled out of the driveway.

I had been so ________to start speeding and skirting around corners that I’d ________just how beautiful the ride is. Now I cruised (漫游) down the peaceful two -lane road, ________the sights, sounds, and smells of the nature that surrounds me. At that moment I made a promise to myself, a promise to take things ________and to never, never, catch myself speeding again.

Life had passed me by while I lived my days in fast ________, ignorantly wishing for tomorrow and ________to notice all the beautiful things along the way. Friendships, victories, heartbreaks — have sped by me because I was too busy looking toward the ________. It seems life also has its own ________, and if you find yourself going too fast, you risk ________ the moments that make it so special.

Moments like this.

6 . I’d planned to spend my weekend in the sun, enjoying flowers outdoors. But that was ____ the pair of disgusting crows (乌鸦) arrived. Out of nowhere, they had set up their base ____ in our backyard.

We first ______ our feathered enemies on Friday morning. It was early, and the sound the birds made ______ through our neighborhood. I figured they’d ______ soon. But, no. They were getting louder and probably ______ my neighbors nearly as much as us with the noise. I admit I got a little ______.

Then, on Sunday afternoon, I saw our dog Quatchi staring at something on the ground. I went to ______ and found a small coal-black bird in the grass. Its eyes were milky, and it stayed perfectly ______ as my dog walked towards it. Only when Quatchi ______ his nose to its head did it walk away. I ______ the dog inside and came back with my camera.

It never occurred to me that the young would be hanging out on the ground, growing and gaining ______ as its parents guarded it from above. The second I saw this little creature I ____ the crows.

To be honest, I’ve never been much of a bird person. And I wish they’d chosen another backyard. But I’m also ______ that I got to see this little bit of nature unfold up close. It’s pretty amazing.

The experience has also ______ my desire to create a beautiful backyard garden that attracts lots of bees, butterflies, and yes, birds. They are welcome here.

7 . Once upon a time, there was a king who had twin sons. There was some _______ about which one had been born first. As they grew up, the king sought out a _______ way of choosing one of them as the crown prince.

One day he said, “My sons, the _______ will come when one of you must succeed (继任) me as king. The _______ of power are very heavy. To find out which of you is _______ able to bear them cheerfully, I'm sending you to one of my advisors, who will place equal burdens on your _______. My crown will go to the one who first _______ bearing his burden.”

The brothers _______ together at once. Soon they met a weak and _______ woman struggling under a heavy weight. One of the boys suggested that they stop to help her. The other ________, “We have a burden of our own to worry about. Let’s be on our way.”

So the second son ________ on while the first stayed behind to help the woman. As he continued, the first son found others who needed ________: a blind man who needed assistance to go home and a lost child whom he carried back to her ________ parents.

Eventually he did reach his father’s advisor, ________ his own burden, and went back home with it ________ on his shoulders. When he arrived back at the palace, his brother met him at the gate and greeted him with ________. “I don’t understand, ” the brother said. “I ________ Father the burden was too heavy to carry. How did you ________ it alone?”

The future king replied ________, “I suppose by helping others carry their burdens. I ________ the strength to bear my own.”

8 . As Christensen and her daughter Riley were scanning the home page of the Bike Rack, a shop in their town, a video link for Project Mobility_________their eyes.She clicked on it out of _________.The video told how Bike Rack co-owner Hal Honeyman had created a( n)_________to provide bicycles that are _________engineered for people with disabilities. It showed the happy faces of those who were now riding them—accident victims, _________veterans (老兵), and children with disabilities.

“I'm going to buy a bike for one of those kids”, Riley told her mother. Two days later, she showed Christensen a _________she had written asking for donations: "I think it's amazing to_________bikes for kids who can’t walk,” the letter said. I saw how happy a boy was when he got one...I'm writing to ask for your _______.”

Christensen was blown away by her daughter's effort, but doubts quickly_________.The cost of just one of those special bikes could be as__________________ as $4,000. Riley could never raise the money.__________________, her letter went out to 75 relatives and friends.Within three days, checks and cash began __________________.Then word about Riley's plan __________________and as Christmas neared, more and more__________________rolled in.The teen__________________raised more than $12,000, enough to pay for three bikes.

Last Christmas Eve, Riley pulled on a Santa hat and __________________the bicycle to one of the__________________kids: Ava, a 13-year-old girl, who couldn't move her legs with a rare genetic disorder. “This is the best Christmas I ever had,” said Riley.

She and Ava have since__________________ together. “When I ride, I like to go fast, get sweaty and feel the breeze”, Riley says."So does Ava. She pumps with her arms, not her __________________but she really flies .”

Riley is determined to keep her__________________going every holiday season. “I want kids to feel the wind in their faces,” she says.

9 . Jake and Max Klein are twin brothers who have a passion for volunteering. Their family have always done community _______ .At a young age, they chose to _______ family's gifts at their birthday parties, but asked them to donate money to a charity. When they were seven, Jake and Max were interested in _______ with a family friend at the local homeless shelter to help cook. _________， he turned them down because they were too _______ and they had to be fourteen to cook. This led them on an endless _______ to come up with a way to help other kids who were also facing a _______ challenging: wanting to help but _______ because of their age.

So, Kids That Do Good was _______ to show ways to kids or adults, at any age, they could join the community and make a ________ .The small ________ has grown into a large website that brings thousands of ________ visitors each year. Jake and Max say that their website brings 35,000 unique viewers, of those viewers, Kids That Do Good has ________ kids to 16,000 organizations.

Jake and Max are ________ with school and after-class activities and other community service promises. Kids That Do Good also has blog posts that advise kids on ________ their own charitable event.

10 . Until a few years ago, I had what most people would probably call a good life, for I had a (an)__ job that paid the bills; I had a good family that I was really close to, and I had a place to live in and money in the bank for trips and ________, and there was nothing much wrong in my life.________, I was bored.

I wanted more. I wanted to live ________ and loudly and make sharp memories instead of the ________ ones of everyday life. But I was a little ________. I’ve never had any ________ in myself. As a child, even buying something in a shop caused me a great deal of ________, and even though I did get better as I got older, I never_____that childhood shyness.And I tried everything, like reading books about confidence. I took tiny steps leading to my goals. But none of them really ________.

So I ________ that the small steps weren’t enough. I signed up for an internship（实习期）teaching English in Vietnam, ahuge step which seems ________, one that ________ me as much as it excited me. And then the day came and I left my home and my loved one. I was alone in a country where the food was ________ and the streets were dirty. I had no idea whether I could________ everything this very strange environment would ________ at me.

I spent more than five months in Vietnam, teaching, exploring and laughing. I’d learned to ________ myself, my skills, my abilities and my decisions. After that, I returned home ________, even to myself, let alone to others. The ________ that had controlled my life and the self-doubt were completely________.

That one big chance changed everything for me, and in me.