阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。
Polar bears live in such environment that is too cold for most animals. For much of the year, they live and hunt on the ________ (freeze) Arctic sea ice. Nature has prepared them for the cold conditions but nothing has prepared them for the danger
________ threatens(威胁) their only home.
The polar bears’ world is melting. Polar bears________ (suffer) in a warmer world are in danger. Studies show that the polar ice
________ (reduce) by 9.8% every 10 years since 1978.At present , about 20,000 to 25,000 polar bears live in the Arctic. Polar bears depend on the sea ice for their
________ (survive). “The sea ice is more than just the platform that the bears walk
________ ,” says Andrew Derocher, who studies North American polar bear populations. “Without
________ , they can’t exist.”
Some melting and refreezing of the polar ice is natural. But in a ________ (warm) world, these cycles speed up, and bears have less time to hunt.
________ (normal), they have three months in the spring when they gain more weight and the extra fat is used later,
________ the bears are not actively hunting. Therefore, it is urgent to protect the environment and maintain the ecological balance.
语法填空
阅读下面材料，在空白处填入适当的内容（不多于3个单词）或括号内单词的正确形式。
Mary will never forget the first time she saw him. He suddenly appeared in class one day, (wear) sun glasses. He walked in as if he
(buy) the school. And the word quickly got around that he was from New York City.
For some reason he sat beside Mary. Mary felt (please), because there were many empty seats in the room. But she quickly realized that it wasn’t her, it was probably the fact that she sat in
last row.
he thought he could escape attention by sitting at the back, he was wrong. It might have made it a little
(hard) for everybody because it meant they had to turn around, but that didn’t stop the kids in the class. Of course whenever they turned to look at him, they had to look at Mary,
made her feel like a star.
“Do you need those glasses for medical reasons?” the teacher asked. The new boy shook his head.” “Then I’d appreciate if you didn’t wear them in class. I like to look at your eyes when I’m speaking to you.” The new boy looked at the teacher
a few seconds and all the other students wondered what the boy would do. Then he took
off, gave a big smile and said “That is cool”.
阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。
Dear Wendy,
Thank you your inviting me to go on holiday with you.I thought this would be a very good
to see you again.I still remember the time when we chatted the night through,
(discuss) our plans for the future. It
that everything would be OK with our arrangements (安排) this weekend.
, oneof my relatives,
has been in the United States for twoyears, will visit my family this Saturday. My parentsexpect me to stay at home. As a
, I regret
(tell) youthat I have to
our plans. I think we can meet duringthe summer holiday. When that time comes, we will be together again and enjoy the
(beauty) scenery of Wenzhou.
Best wishes
阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。
In my last semester of college，my favorite professor made an ________(announce)that he would be teaching a study-abroad course over the winter break in Cambodia．The more he talked about the opportunity，the more
_______ (interest)I became．I left class thinking I might
_______ (actual)do it．
My immediate excitement gave in to excuses _______ the weeks passed．The trip would be expensive，I would have less time to spend with my family over the break and so on．In short，I was
_______ (terrify)of taking the risk．
On the day I made my _______ (decide)，I suddenly felt as if I had seen myself clearly．Why was I so scared to take this chance? How could I let fear get
_______ the way of a once-in-a-lifetime opportunity?Besides，I had always dreamed of travelling the world and
_______ (study)abroad was a major point in my life．So I took the challenge and
_______ (fly)to Cambodia．
Now，looking back to my experiences in Cambodia，I cherish them very much．It has taught me_______ (conquer)fears，big or small and have a faith in myself．
阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式，并将答案填写在答题卡相应的位置上。
Sweet wormwood （青蒿）is a common plant in China, it has the power to cure the deadly disease called malaria （疟疾）. Tu Youyou
（be）the woman who uses the plant’s special power to save millions of lives. The Chinese scientist won a Nobel Prize because of her great contribution.
On October 5, Tu was awarded the 2015 Nobel Prize in Physiology or Medicine. She shared the prize with two other scientists from the US and Japan. Tu is the first native Chinese person __（receive）a Nobel Prize in natural sciences.
Tu was modest about receiving the award: “It’s a success for the whole research team.” She also thinks is scientists’ duty to fight for the health of all humans.
When Tu joined the national research team to find the medicine could fight against malaria in the 1960s and 1970s, things were hard. The team didn’t have advanced equipment back then. Tu used to test
（medicine） by eating them herself. Her team searched old Chinese medicine books
hand and tested over 2,000 traditional recipes.
Once Tu （return）home after traveling for six months. Her little daughter didn’t recognize her and hid from the “strange woman”. To do research, Tu also had to move around a lot.
Finally, Tu found artemisinin （青蒿素）in sweet wormwood in 1971. She spent the next decades （try） to improve the medicine. According to World Health Organization, about 200 million people suffer
malaria around the world, and about haft a million die each year. Artemisinin is stir the most effective treatment against malaria known today.
Tu never complains about how hard she works. “I feel more rewarded when I see so many cured patients,” she said.
阅读下列材料，在空白处填人适当的内容（1个单词）或用括号内单词的正确形式。
In the middle of April, if you walk through Jinghong, capital of Xishuangbanna region in Yunnan province,
(chance) are that you'll get very, very wet. The Dai people will be celebrating their water-splashing（泼水）festival from April 15 t0 17, marking the new year for the Dai ethnic minority.
Lonely Planet, one of the world's(large) travel brands, has described what happens: “People race around the streets of Jinghong and the surrounding villages, soaking（浸透）every person
sight with buckets of water.
(tradition), water would be collected and poured only on family members as a
symbolic way(ensure) good luck in the coming year. Dai people believe that the wetter you get, the luckier you will be.
Although water (play)a vital role in the celebration, there is much more to the festival, especially during the first two days
water splashing is comparatively kept under control, according to Lonely Planet. People wear their best clothes, while older women in nearby villages
(dress) in traditional outfits（服装）.They gather with their families and visit Dai temples. There, they wash the statues of Buddha（佛教）with water, a practice
(know) as ”Bathing the Buddha".
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