1 . Wearing a caveman mask (面具), Dr. Marzluff walks across the camp at the university. Crows (乌鸦) circle and scream. They dive at him and then suddenly fly away.
Beneath the mask,he smiles. Days before, he and his students had
“We always knew crows
When the researchers walked around campus without masks, the crows they had caught and banded didn’t
“Crows are constantly
At first, only the banded birds reacted
Dr. Marzluff’s experiments led him to study how crows’
A.picked out | B.put on | C.searched for | D.taken off |
A.dropped | B.stepped | C.pressed | D.tied |
A.unhappy | B.beautiful | C.black | D.rare |
A.hate | B.attack | C.recognize | D.contact |
A.wave | B.react | C.reply | D.turn |
A.friendly | B.unkind | C.different | D.same |
A.enemies | B.professors | C.owners | D.followers |
A.clothes | B.faces | C.organs | D.figures |
A.expecting | B.admiring | C.watching | D.tolerating |
A.estimating | B.changing | C.restoring | D.worsening |
A.rigidly | B.automatically | C.abnormally | D.threateningly |
A.resulted | B.heard | C.learned | D.benefited |
A.promised | B.identified | C.denied | D.clarified |
A.young | B.neighbor | C.partners | D.opponents |
A.wings | B.noses | C.legs | D.brains |
2 . Long-march makers
One of the greatest mysteries in biology — how the monarch butterfly travels thousands of kilometers on its yearly migration — has just been solved.
Monarch butterflies use the sun to
No other butterfly in the world migrates like orange and black monarchs of North America. Each autumn, thousands travel up to 3,300 km to spend winter in the mountains of Mexico. There are so many that they almost
It usually takes the butterflies two
Three
Past studies have shown the insects use the
This new study now shows the insects use a body “circadian” clock as part of their sun compass. In laboratory tests, monarch butterflies were
Steven Report, who led the research, said, “We have shown the
A.make | B.set | C.switch | D.repair |
A.block out | B.escape from | C.run into | D.pass by |
A.beating | B.expanding | C.folding | D.spreading |
A.decades | B.months | C.days | D.hours |
A.decides | B.designs | C.finishes | D.starts |
A.quarters | B.species | C.groups | D.generations |
A.west | B.south | C.north | D.east |
A.long | B.comfortable | C.brief | D.smooth |
A.sun | B.clock | C.wing | D.tree |
A.distance | B.direction | C.rate | D.speed |
A.taught | B.commanded | C.found | D.forced |
A.accidentally | B.cautiously | C.separately | D.straight |
A.analysis | B.sense | C.attention | D.point |
A.data | B.desire | C.need | D.possibility |
A.unconscious | B.unwilling | C.unafraid | D.unable |
3 . I took a job as a receptionist for a pet doctor almost five decades ago. As an animal lover, I accepted the
At the end of my first week, we were closing the office for the day
That day forever
Fast-forward about a year, I walked into the clinic’s crowded waiting room and called the name of the next client.
I am still in amazement at the show of love and
A.solution | B.transition | C.position | D.function |
A.pressure | B.pain | C.shock | D.anxiety |
A.while | B.when | C.where | D.what |
A.injured | B.damaged | C.frightened | D.hunted |
A.admired | B.applied | C.appreciated | D.begged |
A.waiting | B.operating | C.meeting | D.dressing |
A.fearlessly | B.aimlessly | C.effortlessly | D.tirelessly |
A.removed | B.broken | C.recovered | D.cured |
A.challenged | B.survived | C.struggled | D.suffered |
A.changed | B.inspired | C.alarmed | D.ruined |
A.assistant | B.advisor | C.audience | D.applicant |
A.strong | B.unusual | C.tiny | D.long |
A.partner | B.cheater | C.loser | D.fighter |
A.Suddenly | B.Slowly | C.Finally | D.Gradually |
A.limited | B.conquered | C.pressed | D.approached |
A.sitting | B.lying | C.standing | D.jumping |
A.gratitude | B.beauty | C.talent | D.charm |
A.graduation | B.performance | C.conference | D.retirement |
A.kept | B.greeted | C.passed | D.killed |
A.always | B.often | C.ever | D.never |
4 . Gaspar is a two-year-old dog.His
No one knew exactly what had happened, but airline officials
Upon hearing the
Surviving the
A.adventure | B.plan | C.exercise | D.experiment |
A.treat | B.join | C.punish | D.support |
A.come across | B.care for | C.show off | D.get back |
A.trained | B.abandoned | C.lost | D.adopted |
A.guessed | B.confirmed | C.admitted | D.apologized |
A.happy | B.surprised | C.free | D.ahgry |
A.lovely | B.excited | C.scared | D.disappointed |
A.complaint | B.advice | C.experience | D.news |
A.change | B.look for | C.protect | D.check on |
A.Unless | B.As | C.Although | D.Because |
A.trapped | B.witnessed | C.recognized | D.rescued |
A.successfully | B.voluntarily | C.suddenly | D.possibly |
A.attractive | B.hard | C.famous | D.magic |
A.choice | B.goal | C.chance | D.challenge |
A.wonder | B.secret | C.matter | D.question |
5 . In December, an adult day center nurse in New York came to the rescue of her patient after deciding to adopt the dog he could no longer look after.
John Burley, 60, was a daily
Jennifer Smith knew
Now John Burley is a rehabilitation patient at the center. He is able to
“Once John was
“When he saw Jennifer and Boomer come around the corner, he just burst into tears and
A.patient | B.victim | C.prisoner | D.shopper |
A.studies | B.works | C.recovers | D.hides |
A.terrifed | B.arrested | C.accused | D.hospitalized |
A.unclearly | B.publicly | C.exactly | D.hurriedly |
A.assessed | B.charged | C.received | D.paid |
A.grabbing | B.shopping | C.searching | D.begging |
A.spoiled | B.lazy | C.comfortable | D.frightened |
A.make | B.receive | C.deny | D.pay |
A.designed | B.shaped | C.become | D.considered |
A.trapped | B.stationed | C.settled | D.recorded |
A.harm | B.sight | C.service | D.touch |
A.up to | B.far from | C.back to | D.up against |
A.worked | B.looked | C.voted | D.reached |
A.sharp | B.big | C.dry | D.teary |
A.apologetic | B.sympathetic | C.loyal | D.grateful |
6 . Around three years ago, I was at a stop sign when I heard slightly barking coming from in a car parked on the street near me. It was very
There was no way to
When the police officer helped open the door, the dog
Obviously the man had a condition that caused him to have a(n)
I cannot
A.quite | B.dark | C.hot | D.dry |
A.drove | B.parked | C.took | D.looked |
A.save | B.find | C.walk | D.touch |
A.sad | B.bored | C.puzzled | D.angry |
A.open | B.break | C.clean | D.replace |
A.hit | B.called | C.noticed | D.stopped |
A.disappointed | B.frightened | C.excited | D.surprised |
A.looked after | B.went after | C.shouted at | D.pointed at |
A.why | B.how | C.when | D.where |
A.working | B.sleeping | C.standing | D.lying |
A.attack | B.rest | C.opportunity | D.fight |
A.important | B.strange | C.bad | D.clear |
A.known | B.continued | C.stayed | D.helped |
A.uncertainty | B.anxiety | C.exhaustion | D.emotion |
A.risky | B.hard | C.right | D.big |
A.judge | B.act | C.blame | D.agree |
A.address | B.note | C.mark | D.number |
A.believe | B.face | C.imagine | D.remember |
A.quickly | B.differently | C.perfectly | D.smoothly |
A.seem | B.happen | C.expect | D.prefer |
7 . I took a job as a receptionist for a pet doctor almost five decades ago. As an eager animal lover, I accepted the
At the end of my first week, we were closing the office for the day when a young man ran up to us holding a severely
That day forever
Fast-forward about a year, I walked into the clinic's crowded waiting room and called the name of the next client.
I still tear up in
A.solution | B.transition | C.position | D.registration |
A.depression | B.pain | C.shock | D.anxiety |
A.injured | B.damaged | C.frightened | D.hunted |
A.admiring | B.applying | C.appreciating | D.begging |
A.waiting | B.operating | C.meeting | D.dressing |
A.impatiently | B.conveniently | C.tirelessly | D.effortlessly |
A.awkward | B.easy | C.unique | D.tough |
A.challenged | B.survived | C.struggled | D.suffered |
A.changed | B.spared | C.alarmed | D.ruined |
A.assistant | B.advisor | C.audience | D.applicant |
A.strong | B.broken | C.long | D.tiny |
A.winner | B.cheater | C.loser | D.fighter |
A.Obviously | B.Suddenly | C.Eventually | D.Gradually |
A.limited | B.stuck | C.pressed | D.approached |
A.standing | B.sitting | C.lying | D.jumping |
A.biting | B.striking | C.washing | D.exploring |
A.joyful | B.stressful | C.graceful | D.sorrowful |
A.confusion | B.embarrassment | C.concentration | D.amazement |
A.confidence | B.responsibility | C.gratitude | D.curiosity |
A.always | B.often | C.ever | D.never |
8 . Most people agree that a pet adds joy to a person's life. Scientists are now finding that having a pet may keep its owner
Scientists have been
Can pets also help people live longer? Rebecca Johnson did a study to
The human body makes many chemicals. Some of the chemicals make people feel
You might be allergic(过敏的) to pets. Or you may not want to
Scientists are testing computer pets, like the robotic dog AIBO. They want to see if
Will a robotic pet
A.excited | B.healthy | C.mad | D.hurried |
A.carrying out | B.making up | C.looking at | D.breaking down |
A.advised | B.warned | C.reminded | D.showed |
A.through | B.beyond | C.without | D.against |
A.busier | B.happier | C.funnier | D.angrier |
A.if | B.until | C.unless | D.though |
A.put out | B.find out | C.turn out | D.set out |
A.sick | B.friendly | C.old | D.lovely |
A.move | B.grow | C.walk | D.age |
A.good | B.surprised | C.bored | D.sleepy |
A.work | B.story | C.study | D.case |
A.raised | B.rose | C.fell | D.changed |
A.chemicals | B.sides | C.studies | D.dogs |
A.impossible | B.unusual | C.important | D.true |
A.children | B.friends | C.pets | D.neighbors |
A.live | B.wander | C.stay | D.travel |
A.head for | B.care for | C.search for | D.cheer for |
A.family | B.toy | C.computer | D.baby |
A.real | B.brave | C.devoted | D.quiet |
A.destroy | B.accompany | C.replace | D.improve |
9 . After watching a race, Carole and Verne King returned late at a stormy night to their hotel, where dogs are allowed. They discovered Katie, their 7-year-old border collie (牧羊犬), was
Where would they find it in this town of 23,000 citizens,
By the second weekend, Carole was losing
One morning, a resident called and said she looked out of the window and
Carol King said “I cried,
A.missing | B.anxious | C.naughty | D.abnormal |
A.waiter | B.thunderstorm | C.accommodation | D.darkness |
A.buried | B.attracted | C.surrounded | D.accompanied |
A.desperately | B.directly | C.roughly | D.briefly |
A.charge | B.vain | C.danger | D.pain |
A.expand | B.signal | C.speak | D.respond |
A.inspected | B.experimented | C.swept | D.selected |
A.ending | B.explanation | C.assistance | D.hope |
A.confidence | B.direction | C.interest | D.face |
A.replaced | B.approved | C.persuaded | D.ordered |
A.friends | B.colleagues | C.guests | D.employees |
A.answered | B.found | C.appreciated | D.forgot |
A.looked ahead | B.hurried over | C.settled in | D.showed off |
A.contributed | B.appealed | C.pointed | D.agreed |
A.cautious | B.accessible | C.appropriate | D.sensitive |
A.threw | B.poured | C.slipped | D.delivered |
A.beating | B.fastening | C.hugging | D.fixing |
A.ill | B.asleep | C.apart | D.short |
A.reached | B.remained | C.gained | D.lost |
A.developed | B.witnessed | C.suffered | D.changed |
10 . One of Asia’s best-known tourist attractions is taking a major stand for animals.
Following the
Local outlet the Khmer Times reports that on November 15, two of the 14 elephants
In 2016, an elephant named Sambo died at Angkor, drawing worldwide
According to Angkor Enterprise, which manages park admissions, the UNESCO-listed site is
A.steps | B.pressure | C.example | D.trend |
A.continue | B.improve | C.ban | D.reform |
A.stopped | B.undertaken | C.established | D.begun |
A.currently | B.permanently | C.steadily | D.compulsorily |
A.famous | B.shabby | C.typical | D.remote |
A.lent | B.contributed | C.sent | D.submitted |
A.clinic | B.forest | C.circus | D.zoo |
A.participants | B.pets | C.performers | D.animals |
A.gentle | B.dangerous | C.strong | D.interesting |
A.routine | B.facility | C.activities | D.accommodation |
A.attention | B.donation | C.respect | D.sympathy |
A.come from | B.accused of | C.led to | D.blamed on |
A.consumption | B.exhaustion | C.annoyance | D.absorption |
A.leaked | B.claimed | C.published | D.investigated |
A.popularity | B.existence | C.presentation | D.population |
A.solving | B.facing | C.emphasizing | D.revealing |
A.longest | B.widest | C.latest | D.biggest |
A.refused | B.bought | C.entered | D.paid |
A.compensate | B.switch | C.corrupt | D.impact |
A.volunteers | B.employees | C.travelers | D.enthusiasts |