當(dāng)前位置:
知識點挑題
請展開查看知識點列表
>
<
更多>>
已完結(jié)
|
熱點預(yù)測
高考復(fù)習(xí)
新題搶練
瀏覽次數(shù):209
更新:2025年01月21日
|
已完結(jié)
|
熱點預(yù)測
高考復(fù)習(xí)
熱搜題專練
瀏覽次數(shù):68
更新:2025年01月21日
|
311.With the old man_______ the way,we had no trouble _______the cave.( )
發(fā)布:2025/1/1 16:30:1組卷:135引用:4難度:0.5312.When you're super tired,you may be more likely to take a nap than grab a snack.What about mosquitoes?Scientists have long been interested in mosquito sleep cycles.
However,it's hard to study sleeping mosquitoes.That's partly because mosquitoes will get excited when they sense a meal:the experimenter.That makes it difficult for the insects to nod off.And when mosquitoes do nod off,they look rather similar to those that are just resting to save energy.
Ajayi at the University of Cincinnati and his colleagues studied mosquitoes' sleep.The team focused on three species known to carry diseases.The first,Aedes aegypti,is active by day.The second,Culex pipiens,prefers to dine after dusk.The third - the malaria-carrying Anopheles stephensi - is up at night.All these mosquitoes were left alone in a room.There,the team used cameras and sensors to spy on them.Together,these observations helped the researchers spot a sleeping mosquito.
After about two hours,the mosquitoes appeared to nod off.They didn't move for a long time.And as time went on,Culex pipiens and Aedes aegypti showed less response when the experimenter walked in the room.This showed that a tasty smell was less likely to wake those species when in a deep sleep.
Then the insects were placed in clear tubes that were shaken every few minutes to keep them from falling into a deep sleep.After 4 to 12 hours,the team exposed the insects to some heated sweat.That mimicked(模仿)the presence of a host on which the mosquitoes could snack.In another experiment,a human volunteer offered up a leg for mosquitoes to feed on for five minutes.
In both cases,the mosquitoes that got a full night's rest were much more likely to land on the host than sleep-deprived(剝奪) ones.In eight tests,an average of 77 percent of the well- rested mosquitoes went for a blood meal.Only 23 percent of mosquitoes that were sleepy did the same.
The findings open avenues for research into controlling mosquitoes,Ajayi says.That,in turn,could help keep people safe from mosquito-spread diseases.
(1)What adds difficulty to studying sleeping mosquitoes?
A.Mosquitoes' daily routines.
B.The smell of human beings.
C.The wide variety of mosquitoes.
D.Mosquitoes' different sleeping habits.
(2)What did Ajayi do to study mosquitoes?
A.He tracked mosquitoes' behavior.
B.He tested the mosquitoes on his leg.
C.He went over many previous studies.
D.He exposed mosquitoes to many snacks.
(3)What is the finding of the study?
A.Mosquitoes need more sleep than humans.
B.Mosquitoes never bite when lacking sleep.
C.Sleepy mosquitoes like the smell of heated sweat.
D.Sleepy mosquitoes are more likely to sleep than to eat.
(4)What is the significance of this study?
A.It can help to understand human sleep.
B.It can help to control the spread of some diseases.
C.It can help to to find out technology to mimick mosquitoes.
D.It can help to discover the differences between various mosquitoes.發(fā)布:2025/1/1 16:30:1組卷:2引用:4難度:0.5313.I shall never forget those years I lived in the country with the farmer,______has a great effect on my life.( )
發(fā)布:2025/1/1 16:30:1組卷:67引用:2難度:0.5314.Keeping a proper balance between study and rest keeps us
發(fā)布:2025/1/1 16:30:1組卷:8引用:3難度:0.7315.Mr.White is quite different to me.I had a lot of anger inside of me,when I first met him.I've lived my whole life in Spanish Harlem(黑人居住區(qū)),but in my neighborhood,there are shoot-ups(槍擊)all the time,which is (1)
Mr.White worked long time,making sure I did my (6)
Mr.White was (11)
On the(14)(1) A.terrible B.significant C.strange D.tiresome (2) A.held up B.brought up C.beaten up D.called up (3) A.a(chǎn)dvance B.silence C.debt D.prison (4) A.if B.but C.or D.so (5) A.stay B.continue C.leave D.happen (6) A.shopping B.exercise C.writing D.work (7) A.grades B.standards C.virtue D.confidence (8) A.lesson B.show C.race D.exhibition (9) A.closed B.open C.empty D.full (10) A.a(chǎn)way B.near C.down D.up (11) A.trained B.selected C.considered D.refused (12) A.position B.a(chǎn)ppointment C.rank D.a(chǎn)ward (13) A.going B.moving C.rushing D.playing (14) A.a(chǎn)nniversary B.opening C.graduation D.celebration (15) A.jokes B.promises C.tears D.pleasures (16) A.line B.secret C.touch D.check (17) A.science B.literature C.politics D.education (18) A.a(chǎn)dapted from B.divided into C.based on D.a(chǎn)pplied to (19) A.gather B.deliver C.purchase D.sell (20) A.backgrounds B.schools C.fields D.industries 發(fā)布:2025/1/1 16:30:1組卷:1引用:2難度:0.4316.Exercise helps to keep us in good health.Doctors at the American Heart Association suggest getting at least 150 minutes of proper physical activity every week.Many people exercise for a few minutes every day or every other day.So,getting 150 minutes every week is easy.
But what about those times when you are sick?If you do not feel well,should you keep following your exercise habit?Health experts answer these and other questions.
Edward R.Laskowski is a doctor at the Mayo Clinic.He and other experts have a general rule of yes about exercising when you are sick.It is usually fine to exercise,he explains,if your symptoms (癥狀)are all "above the neck".These signs may include a runny nose,a blocked nose,sneezing or a minor sore throat.
Geralyn Coopersmith is a physical fitness trainer who has written several books on exercise and nutrition.Both Coopersmith and Dr.Laskowski suggest taking a break from exercising if signs of your illness appear "below the neck".Pay special attention to symptoms such as chest congestion,extreme cough or pain in the stomach.
There are other symptoms that can tell you to avoid exercise.They include:a higher than normal body temperature,a sense of feeling extremely tired,and widespread muscle pain.
Both Coopersmith and Dr.Laskowski suggest listening to your body If you feel really bad,take a break and let your body rest.If you don't feel too bad,these experts both suggest reducing the amount of exercise.For example,if you usually run,take a quick walk instead.
(1)How long should people do exercise to keep healthy?
A.About 150 minutes per day.
B.Around 100 minutes per day.
C.At least 150 minutes per week.
D.No more than 100 minutes per week.
(2)When will Edward R.Laskowski say no to exercise?
A.When your left leg is broken.
B.When you have a runny noses.
C.When you have a blocked nose.
D.When you have a minor sore throat.
(3)What is the meaning of " listening to your body " in Paragraph 6?
A.Be careful with your cars.
B.Learn to take advice of others.
C.Pay attention to body signals.
D.Listen to music to keep healthy.
(4)What will the writer be likely to agree with?
A.Practice makes perfect.
B.Nothing seek,nothing find.
C.Put your heart into exercise.
D.Act according to your abilities.發(fā)布:2025/1/1 16:30:1組卷:7引用:4難度:0.5317.
發(fā)布:2025/1/1 16:30:1組卷:1引用:3難度:0.5318.Hannah Levine decided she wanted to give hugs to all of the children and families in need at local hospitals.
Because she couldn't give them hugs one by one,Levine,then a sixth-grader,decided she would use her talents (才能) to do the next best thing.She began to knit (編織) hats,scarves,and blankets for families staying at the Ronald McDonald House at Stanford.Her creations also went to Bundle of Joy,a programme that provides newborn baby items for families in need,and to Knitting Pals by the Bay,a local organisation that provides hand-knitted caps to cancer patients.
"I love to knit,and I thought it would be a great idea to make all these handmade items for kids and adults who need them.It would be like a hug for them," Levine explained.
Levine started the project about a year ago. "I think it's just really fun to do,and it keeps me busy," said Levine,now 13.
Once she got started,Levine realised that her project could be much bigger than the goods she was able to produce with just her own hands.So she sent emails to her school and communities,asking for knitted donations (捐贈物) to the project,she named "Hannah's Warm Hugs".She also posted advertisements at Starbucks and other locations in her area.The warm goods began to pour in.
"It was amazing;more strangers than people she knew started dropping donations at our door," said Levine's mother,Laura Levine. "We ended up with this huge box of items she was donating."
The knitted items numbered in the hundreds.Levine made her first round of donations around Hanukkah (an eight-day Jewish holiday in November or December) and later received thank-you letters from the organisations.Levine is still knitting,and she said the project will continue.
"It has turned into a bigger thing than she had thought," her mum said. "It made her feel pretty good;it made us feel pretty good."
(1)Hannah Levine knitted hats,scarves and blankets
A.to earn some pocket money
B.to raise money for cancer patients
C.for children and families in difficulty
D.for the homeless in her neighbourhood
(2)What can the underlined part "pour in" in Paragraph 5 best be replaced by?
A.Take off.
B.Go out.
C.Flood in.
D.Break in.
(3)What would be Laura Levine's attitude towards Hannah Levine's project?
A.Optimistic but worried.
B.Proud and supportive.
C.Worried but doubtful.
D.Unsatisfied and uncaring.
(4)What would be the best title for the text?
A.Be Ready to Lend a Helping Hand
B.Start a Project to Show Your Support
C.A 13-year-old Girl Becomes the Best Knitter
D.A Teen Turns Knitting Hobby into Heartwarming Project發(fā)布:2025/1/1 16:30:1組卷:10引用:3難度:0.5319.You say he works hard; __________,and __________.( )
發(fā)布:2025/1/1 16:30:1組卷:96引用:5難度:0.9320.We will explore a different __________ to gathering information.( ?。?/h2>
發(fā)布:2025/1/1 16:30:1組卷:62引用:2難度:0.9