2020年高邑县第三中学高三英语期中试卷及答案解析
口红怎么做第一部分 阅读（共两节，满分40分）
第一节（共15小题；每小题2分，满分30分）
阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项
郑浩天A
Some young people win attention becau of their good looks or their singing ability. A much smaller number gain fame becau they have done something important and worthwhile with their abilities. Rishab Jain is among the latter. In 2018, 13-year-oldRishab developed a way to u AI technology to help pancreatic(胰腺的) cancer patients and won the3MYoung Scientist Challenge, a nationwide middle-school science competition, and its $25,000 prize.
In the last stage of the contest, Rishab competed againstnine other finalists at the 3M Innovation Center(创新中心) in St.Paul,Minnesota. Leading up to the big meet, each finalist
had partnered with a scientist to further develop their inventions.
Rishab explains what led him to create his invention. First,a family friend died of cancer. Then Rishab learned about how deadly pancreatic cancer is, and that its low survival rate is due to how difficult it is to treat. "I'm also into programming, so I was learning about AI technology. I decided to try to solve a real-world problem using it."
His winnings have been put in further rearch and in his nonprofit Samyak Science Society, which helps poor children enter the STEM (science, technology, engineering and math) education. Rishab is also raising awareness about pancreatic cancer. The efforts make him quite different from teenagers of his age. Considering becoming a biomedical engineer or a doctor一or both, he has also put some money aside to further his own learning. Almost certainly the doors of higher education will open wide to him before he even knocks.
That's an outstanding outlook for one so young. Rashib is committed to helping very sick people in need. He is also providing teenagers of his age with a much-needed model of w可歌可泣意思
hat kinds of things youth can achieve.
1. What can we learn about the 3M Young Scientist Challenge in 2018?
A. It was intended to solve medical problems.
吉他结构B. It was a nationwide AI competition for teenagers.
爱心活动>相术大师C. It offered the finalists an opportunity to work with scientists.
D. It allowed the finalists to learn AI technology in the 3M center.
2. How did Rishab win the 3M Young Scientist Challenge?摇篮曲舒伯特
A.He showed excellent programming ability.
B. He figured out the survival rate of pancreatic cancer.
C. He introduced poor children to STEM education.
D. He applied AI technology to treating pancreatic cancer.
3. Which of the following best describes Rishab?
A. Talented and caring. B. Independent and humorous.
C. Responsible and patient. D. Polite and inspiring.
B
Scientists have discovered a new behaviour among bumblebees that tricks plants into flowering early.
When lack of pollen, bumblebees will bite little by little on the leaves of flower-less plants. The damage ems to fool the plant into flowering, sometimes up to 30 days earlier than normal.
With their hairy appearance and special sounds, bumblebees are hard to miss in gardens all over the world. Their hairy bodies make them excellent pollinators for crops like tomatoes and blueberries. They are among the first bees to appear each year and work a long ason.经期时间长怎么回事
But despite their key role, bumblebees, like many other pollinators have en their numbers decline suddenly in recent decades. One recent study pointed to climate change, reporting that an increasing number of hot days in Europe andNorth Americawas raising local bumblebees extinction rates.
But rearchers have now made a discovery about bumblebees that could have something to do with their long term survival. Scientists inSwitzerlandfound that when the bumblebees were out of pollen, they started to bite on the leaves of plants that hadn't yet flowered. They ud their mouths to cut clearly-shaped holes in the leaves. But the creatures didn't eat the material or u it in their nests.
The damaged plants responded by flowering earlier than normal- -in some cas up to 30 days ahead of schedule. Rearchers also found that the bee damaged plants flowered 30 days earlier than undamaged plants and 25 days earlier than ones damaged by the scientists.
“I think everything that we've found is consistent with the idea that the bumblebees are da
maging the plants and that that's an adaptation that brings flowers earlier and that benefits the bees,” said Dr Mark Mescher, one of the authors from ETHZurich.
4. How do bumblebees fool plants into flowering earlier?
A. By making u of the hot weather. B. By putting the fal flowers on the leaves.
C. By attacking the leaves of flowerless plants. D. By taking away the pollen from the other flowers.
5. What's bumblebees’ key role?
