From the top of Mount Qomolangma to the bottom of the Mariana Trench, plastic continues to pollute a range of environmental areas, and it poses a significant threat to all life forms on Earth.
She extracted the carbohydrate called "chitin" from the shells and used chemical change to turn it into chitosan(聚氨葡萄糖). She then mixed it with a protein called "fibroin", which is found in silk cocoons. Using the
In the 2018 Broken Hill Proprietary company(BHP)Billiton Foundation Science and Engineering Awards, Arora was awarded the Innovator to Market Award. She also gained international
The 17-year-old, now a student of medicine, is on a search to
An
A.Despite | B.Besides | C.Except | D.Without |
A.but for | B.other than | C.thanks to | D.rather than |
A.commercial | B.comprehensive | C.contrary | D.constant |
A.contract | B.concept | C.combination | D.contact |
A.breaks down | B.takes down | C.puts down | D.sets down |
A.reduces | B.releases | C.stores | D.increases |
A.disapproval | B.ability | C.recognition | D.profit |
A.courageous | B.brilliant | C.generous | D.honest |
A.scholarship | B.medal | C.admiration | D.election |
A.require | B.remain | C.remove | D.reflect |
A.see through | B.go through | C.break through | D.glance through |
A.forbidding | B.allowing | C.forcing | D.urging |
A.clearer | B.higher | C.cheaper | D.lower |
A.innocent | B.inspiring | C.intelligent | D.interesting |
A.follow | B.oppose | C.destroy | D.damage |
相似题推荐
【推荐1】Being admitted to hospital is boring. Since childhood Kevin Gatlin has been bored by the
Gatlin is the
It was
He also worked with teachers to make the games
A.unfriendly | B.dull | C.pleasant | D.healthy |
A.simple | B.peaceful | C.normal | D.complex |
A.escape | B.enjoy | C.experience | D.increase |
A.customer | B.competitor | C.sponsor | D.inventor |
A.addicted | B.restricted | C.devoted | D.accustomed |
A.train | B.adopt | C.visit | D.examine |
A.inspiration | B.money | C.material | D.permission |
A.boring | B.scaring | C.puzzling | D.heartbreaking |
A.brought about | B.thought about | C.cared about | D.set about |
A.force | B.allow | C.help | D.promise |
A.developing | B.promoting | C.advertising | D.producing |
A.quality | B.size | C.warmth | D.comfort |
A.professional | B.educational | C.regular | D.profitable |
A.sheets | B.cures | C.lessons | D.games |
A.discover | B.connect | C.adapt | D.donate |
【推荐2】17-year-old Aarrav Anil, interested in robotics, has represented his country at more than 20 robotics competitions. Now, he has
Aarrav didn’t do this to win awards or honor; his
Not everything went
While similar products have already
A.discovered | B.recommended | C.invented | D.advocated |
A.curiosity | B.independence | C.appetite | D.strength |
A.admiration | B.fancy | C.motivation | D.design |
A.hesitating | B.preferring | C.refusing | D.struggling |
A.nurse | B.inspire | C.persuade | D.remind |
A.precisely | B.quickly | C.separately | D.smoothly |
A.find | B.identify | C.upgrade | D.reshape |
A.exposure | B.step | C.model | D.submission |
A.unsuitable | B.unequal | C.unqualified | D.unhealthy |
A.taken in | B.gone through | C.made for | D.turned down |
A.drop-proof | B.trouble-free | C.water-resistant | D.weather-worn |
A.thinner | B.flatter | C.firmer | D.deeper |
A.cornered | B.entered | C.determined | D.enriched |
A.setting | B.negotiating | C.assessing | D.lowering |
A.right | B.chance | C.mind | D.desire |
【推荐3】Early on Saturday morning, parents and viewers walked in a line into the gym at the Einste Academy, a school in Illinois in the US. After the coach
While this sounds like the typical setting of a US sporting event, this one had a high-tech twist, was a competitive robotics
“Most students experience multiple-choice questions.” said Jonathan Weiland, who works f FIRST Tech Challenge in Illinois. “In FTC, there are hundreds of solutions to a problem and they see which solution
“Founded by a not-for-profit organization, FIRST (For Inspiration and Recognition of Science ai Technology) events are modeled after traditional sports like basketball to generate
During a FIRST Tech Challenge, Robotics teams either
The robotics teams compete in games within a league, getting points throughout the season
“Judges
“One of the best things you can do with your
A.delivered | B.wrote | C.reviewed | D.corrected |
A.sent | B.called | C.applied | D.rose |
A.references | B.notebooks | C.positions | D.responsibilities |
A.meet | B.example | C.design | D.creation |
A.Blamed | B.Guided | C.Warned | D.Praised |
A.switches | B.responds | C.appears | D.works |
A.disappointment | B.violence | C.excitement | D.power |
A.purchase | B.damage | C.throw | D.store |
A.political | B.industrial | C.financial | D.agricultural |
A.bring up | B.turn in | C.stick to | D.qualify for |
A.model | B.material | C.performance | D.location |
A.hopefully | B.randomly | C.skillfully | D.actively |
A.coach | B.judge | C.roommate | D.teammate |
A.discourage | B.beat | C.greet | D.join |
A.intelligence | B.right | C.life | D.hobby |
【推荐1】Grandma Margaret, our neighbor across the street, was a good friend of my mom. One day near Christmas, we heard a knock on the door, and in walked Grandma Margaret with a(n)
After she left, we rushed to the
On Christmas morning, we girls
My dad thanked Grandma Margaret’s for her
What I wanted to know next was what she had given my parents. You see, my dad was a
Mom and Dad sat together and then Mom
A.plastic | B.huge | C.empty | D.old |
A.gift | B.sheet | C.fund | D.diet |
A.tap | B.exit | C.tree | D.habitat |
A.watch over | B.search for | C.pick up | D.find out |
A.recognize | B.move | C.measure | D.rescue |
A.raced | B.cycled | C.walked | D.dressed |
A.packaged | B.delivered | C.placed | D.promoted |
A.service | B.company | C.adventure | D.kindness |
A.by accident | B.with difficulty | C.out of patience | D.at a time |
A.creative | B.proud | C.outgoing | D.awkward |
A.money | B.lighting | C.education | D.vacation |
A.amazing | B.classic | C.positive | D.struggling |
A.designed | B.stored | C.accepted | D.donated |
A.weighed | B.lifted | C.mailed | D.cleaned |
A.removed | B.held | C.spared | D.blew |
【推荐2】This morning, I started very late in my car to office, I was in a
Everyone there was just
Seeing this, I
After that I went into deep thinking over the human
A.fashion | B.mess | C.hurry | D.way |
A.injured | B.stuck | C.lost | D.removed |
A.properly | B.awkwardly | C.considerately | D.constantly |
A.anxiety | B.concern | C.anger | D.sadness |
A.cause | B.evidence | C.influence | D.effort |
A.break down | B.turn off | C.set off | D.pull up |
A.comforting | B.directing | C.watching | D.checking |
A.admission | B.opportunities | C.trust | D.assistance |
A.observing | B.blaming | C.inspiring | D.punishing |
A.satisfied | B.impatient | C.frightened | D.embarrassed |
A.progress | B.focus | C.practice | D.inconvenience |
A.forgiving | B.criticizing | C.persuading | D.encouraging |
A.tiredly | B.immediately | C.purposely | D.steadily |
A.pretended | B.cooperated | C.hesitated | D.promised |
A.vain | B.secret | C.relief | D.private |
A.apologized | B.shouted | C.explained | D.complained |
A.intelligence | B.relationship | C.attitude | D.practice |
A.satisfaction | B.sympathy | C.benefit | D.trust |
A.neglect | B.estimate | C.simplify | D.overcome |
A.wise | B.similar | C.painful | D.common |
【推荐3】Once there was a tailor who lived in a house on a side street in East Boston and
For fourteen years his life
The little tailor could hardly
He
Night after night he partied until dawn, spending his money
Disillusioned and extremely tired, he
Two years later there came a second knock at his door. The same two gentlemen stood there once again. “This is the most
The little tailor staggered to his feet with a complaint that could be
A.escaped | B.worked | C.wasted | D.waited |
A.trapped | B.charged | C.controlled | D.allowed |
A.proved | B.report | C.pray | D.pretend |
A.fortune | B.holiday | C.lesson | D.wisdom |
A.continued | B.improved | C.broke | D.stopped |
A.speaker | B.noise | C.knock | D.voice |
A.promised | B.warned | C.taught | D.informed |
A.believe | B.find | C.touch | D.cover |
A.merely | B.really | C.hardly | D.fairly |
A.damaged | B.repaired | C.locked | D.rented |
A.sorry | B.famous | C.anxious | D.fit |
A.as if | B.even though | C.now that | D.so that |
A.disappeared | B.changed | C.happened | D.mattered |
A.However | B.Otherwise | C.Furthermore | D.Therefore |
A.determined | B.refused | C.hesitated | D.failed |
A.class | B.business | C.company | D.job |
A.honesty | B.position | C.success | D.habit |
A.gave away | B.set aside | C.picked up | D.work out |
A.accurate | B.beneficial | C.common | D.unbelievable |
A.recorded | B.heard | C.ignored | D.passed |
【推荐1】I was in a PhD program in history when I came down with schizoaffective disorder (分裂情感性障碍). I was forced to
Fortunately, with the help of my doctor, I soon found a(n)
For some time, I was
Through the experience, I’ve learned no matter what happens, always look to the future with hope. It may take a while, but you can
A.complete | B.extend | C.pursue | D.interrupt |
A.limited | B.difficult | C.final | D.reasonable |
A.challenge | B.conflict | C.failure | D.danger |
A.literature | B.psychology | C.history | D.education |
A.course | B.dream | C.example | D.answer |
A.duty | B.relief | C.reality | D.result |
A.depressed | B.frightened | C.exhausted | D.astonished |
A.stand out | B.give in | C.show off | D.stay up |
A.novel | B.diary | C.poem | D.biography |
A.anticipated | B.hated | C.shared | D.abandoned |
A.curiosity | B.delight | C.anxiety | D.hesitation |
A.accepted | B.doubted | C.discovered | D.forgot |
A.new | B.social | C.permanent | D.relevant |
A.participate | B.survive | C.succeed | D.cooperate |
A.possess | B.need | C.achieve | D.represent |
【推荐2】One year after Tom was born, his parents had a car accident. They never
As Tom was growing up, he
As he couldn’t catch up with the other students at school, he dropped out of school and came back home. But he didn’t stop learning. He had a big dream. Though he didn’t learn fast, he kept
After many years of learning at home, he
When listening to his videos and tapes, he shows confidence. He tells about his
For those who have low self-confidence, I suggested you
A.returned | B.called | C.imagined | D.planned |
A.busy | B.old | C.poor | D.mean |
A.friends | B.kids | C.students | D.parents |
A.brave | B.strange | C.confident | D.kind-hearted |
A.explored | B.brought | C.faced | D.solved |
A.sisters | B.classmates | C.brothers | D.teachers |
A.sad | B.bored | C.tired | D.confused |
A.proving | B.cheering | C.entertaining | D.teaching |
A.strangely | B.immediately | C.finally | D.luckily |
A.confidence | B.mood | C.grade | D.talent |
A.hours | B.days | C.months | D.years |
A.family | B.habit | C.story | D.hobby |
A.long | B.encouraging | C.simple | D.interesting |
A.avoid | B.finish | C.start | D.enjoy |
A.cheat | B.discover | C.gain | D.move |
【推荐3】If a person lost an arm, how could he or she play basketball? How could he or she
Zhang soon
“Your heart is always the
A.again | B.nearly | C.hardly | D.even |
A.got | B.caught | C.made | D.had |
A.escaped | B.called | C.increased | D.arrested |
A.potential | B.extraordinary | C.creative | D.natural |
A.filmed | B.posted | C.promoted | D.developed |
A.admitted | B.tested | C.showed | D.strengthened |
A.turn | B.defense | C.order | D.sight |
A.cheer | B.laugh | C.voice | D.argument |
A.permanent | B.helpful | C.special | D.impressive |
A.commented | B.advertised | C.responded | D.explained |
A.watched | B.collected | C.shared | D.downloaded |
A.profits | B.offers | C.likes | D.plays |
A.worn out | B.pulled out | C.cut away | D.taken away |
A.uncomfortable | B.unfortunate | C.unforgettable | D.unbelievable |
A.avoid | B.discourage | C.delay | D.risk |
A.given in to | B.lived up to | C.held on to | D.come down to |
A.condition | B.pain | C.privilege | D.limitation |
A.recreation | B.ladder | C.motivation | D.job |
A.Actually | B.Exactly | C.Constantly | D.Firstly |
A.finest | B.softest | C.strongest | D.warmest |