题目内容

Try this: For an entire day, forget about the clock. Eat when you’re hungry and sleep when you’re tired. What do you think will happen?

You may be surprised to find that your day is much like most other days. You’ll probably get hungry when you normally eat and tired when you normally sleep. Even though you don’t know what time it is, your body does.

These patterns of daily life are called circadian rhythms(生理节奏), and they are more than just habits. Inside our bodies are several clocklike systems that follow a roughly 24-hour cycle. Throughout the day and night, our inner clocks direct changes in temperature, body chemicals, hunger, sleepiness and more.

Everyone’s rhythms are different, which is why you might like to stay up late while your sister always wants to go to bed early. But on the whole, everyone is programmed to fell tired at night and energetic during the day.

Learning about our body clocks may help scientists understand why problems arise when we act out of step with our circadian rhythms. For example, traveling across time zones can make people wake up in the middle of the night. Regularly staying up late can make kids do worse in tests.

“There is a growing sense that when we eat and when we sleep are important parts of how healthy we are,” says Steven Shea, director of the Sleep Disorders Program at Brigham and Women’s Hospital in Boston.

One way to learn about how our body clocks tick is to mess them up and see what happens. That’s what neurologist(神经病学家)Frank Scheer and his workmates did in a recent study.

Staying up night after night, their studies suggest, could make kids extra hungry and more likely to gain weight. And regularly sleeping too little, Scheer says, may be one cause of the recent increase in childhood obesity.

1.What will happen if you forget about the clock according to the passage?

A. You will feel upset.

B. You will behave normally.

C. Your body will not know what time it is.

D. You will probably get hungry more easily.

2.Mike feels energetic at 12 midnight while Tom feels sleepy. What advice would be given by the writer?

A. Both should see a doctor..

B. Tom should see a doctor.

C. Both should take it easy.

D. Mike should have a watch.

3.How do Frank Scheer and his workmates study body clocks?

A. By seeing what happens when they are messed up.

B. By asking questions and collecting answers.

C. By studying people traveling across time zones.

D. By programming people with man-made clocks.

4.What will the writer most probably talk about next?

A. Other examples of what people will do when their body clocks go wrong.

B. Medicines that can keep people from putting on weight.

C. Why it is important to have a normal body clock.

D. What circadian rhythms are.

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相关题目

Dramatic performing in an excellent method of building confidence in children and adults alike.Learning drama allows children to ______ their creativity and have fun while leaving their ______ and worries behind.Drama also works by supporting the growth of imagination and other skills.

Entertainment has become rather passive with ______,television and video games becoming more popular.These screen?based methods have had a ______ effect on communication.They prevent children communicating with others.______,drama puts the children enthusiastic about communication back into entertainment.Children have the opportunity to ______ with others in a more meaningful way ______ drama encourages speech development,awareness of body language and allows children to become more ______ aware.

Play and drama are closely linked.When children play a game,they are using their ______ and moving away from reality to ______ their own story.Drama is a vehicle ______ which children can express themselves more freely to make education fun.

Children gain ______ by understanding that there is no final answer in drama and that their opinion and contribution are valued.They are able to ______ to many issues and situations such as poverty,recycling and global warming.Drama and ______ have a strong link as drama can ______ children to take an active interest in other subjects such as geography,history and English and so they can ______ a more rounded education.

As a drama teacher,I have witnessed a child at his first class holding on to his parent’s arm—______ to let go.Then to see the same child running into my class with a smile is an ______ sight.Drama installs confidence in children by allowing them to improvise(即兴创作) and experiment.Everyone is given the opportunity to shine ______ drama.Besides learning the history of the theatre,drama ______ dance,music,and directing,etc.These classes are especially designed to be of great fun.

1.A. express B. expose C. experience D. explore

2.A. excitement B. happiness C. shyness D. sadness

3.A. movies B. radios C. media D. drama

4.A. positive B. negative C. sensitive D. subjective

5.A. However B. Besides C. Therefore D. Meanwhile

6.A. compare B. discuss C. connect D. compete

7.A. though B. as C. if D. before

8.A. mentally B. physically C. emotionally D. socially

9.A. determination B. consideration C. communication D. imagination

10.A. create B. tell C. read D. believe

11.A. through B. beyond C. across D. for

12.A. success B. hope C. admiration D. confidence

13.A. stick B. turn C. respond D. reply

14.A. language B. education C. play D. entertainment

15.A. persuade B. require C. encourage D. train

16.A. have B. continue C. provide D. give

17.A. tired B. unwilling C. sorry D. pleased

18.A. ordinary B. excellent C. odd D. imaginary

19.A. over B. above C. after D. within

20.A. possesses B. applies C. covers D. links

There is so much competition in the world where we live. Every single person has a(n) ____ to succeed and be the best at what they can. There are college basketball players ______ reaching the professional level and students trying their best to get an “A” on their math test. We meet businessmen that have ____ a lot of money. We all have a role ____ we look up to, or have looked up to at some point in life, whether it is a respected elder in our family, a trusted friend around us, or a(n) ____ person often appearing on TV screens or magazine covers.

It is ____ having role models and looking up to people that ____ us. However, how often do you ask yourself, “Why is he smarter than me?” or “How did this person achieve such a great ____ at such a young age?” I went to a great high school that was very ____ and demanding; I saw many very ____ students graduate and get into a famous school. I also ____ when I got my math test paper back, I sometimes ____ why I never got consistent “A”s like the student sitting two seats away from me.

However, what I ____ after entering college was that one should never ____ their skills or levels of success with other people’s. Every single person is ____ and we all have some sort of unique talent. If you are not good at ____ or want to improve a specific skill, you have to learn how to be patient and understand your ____ and try to overcome them.

The ____ is that you can all become an honor student if you want to or even improve your running skills. But you have to keep in ____ that understanding your weaknesses and strengths is a very ____ step in the process. You have to learn how to look at yourself and set goals step by step so that you can track your improvement.

1.A. desire B. choice C. stress D. ability

2.A. dreaming of B. informed of C. getting into D. broken into

3.A. spent B. taken C. earned D. offered

4.A. style B. model C. type D. pattern

5.A. cheerful B. strange C. famous D. awkward

6.A. funny B. astonishing C. ashamed D. great

7.A. dislike B. persuade C. follow D. motivate

8.A. prizes B. success C. medals D. goals

9.A. competitive B. acceptable C. diverse D. positive

10.A. careless B. generous C. bright D. curious

11.A. suspect B. suggest C. remember D. advocate

12.A. noticed B. explained C. wondered D. believed

13.A. achieved B. learnt C. checked D. removed

14.A. combine B. compare C. adopt D. relate

15.A. perfect B. simple C. ordinary D. different

16.A. anything B. nothing C. everything D. something

17.A. advantages B. weaknesses C. potential D. personalities

18.A. problem B. question C. truth D. doubt

19.A. contact B. touch C. action D. mind

20.A. important B. difficult C. interesting D. obvious

Last Christmas while staying with my parents, I _______ across some old love letters that my parents wrote to each other. These letters were all piled up in a basket, dirty and _______ with dust. ________to read and sort them, I asked them if I could take the letters back to my Illinois home. They agreed.

As I carefully opened each letter, all of them delicate with age, I discovered a new page______unknown to me in this private chapter of my parents’ lives.

My father used to ________ in the army. So his letters were full of frontline ________of the things about the war. Each of my mother’s letters was marked ______ her 1944 dark red lipstick kiss. I was _______ to these letters like a magnet (磁铁).

Just six weeks after our Christmas visit, Daddy became very _______ and was hospitalized. This time, he was fighting a _______kind of war. As I sat by his bedside, we discussed the ______. He told me how much receiving those lipstick-kissed letters had ______ to him when he had been so far from home.

It so happened that the next day would be February 14. From the ______ letters I chose the card my father had sent Mother in 1944 and brought it to my father’s bedside.

At his bedside, I joked with him, saying _____, “Today is Valentine’s Day, don’t you want to send Mother a present?” He became more_______ when I handed him the old ______. He carefully opened it and took out the card, and when he ______it, his eyes were filled with tears.

My father, in a voice tight with ______read the loving______he’d sent to my mother fifty-six years earlier. And this time, he could read it to her ______ .

1.A. came B. hit C. drew D. fell

2.A. hidden B. covered C. buried D. filled

3.A. Pretending B. Suggesting C. Preferring D. Deciding

4.A. recently B. occasionally C. previously D. usually

5.A. work B. study C. serve D. report

6.A. accounts B. documents C. introductions D. occupations

7.A. with B. for C. of D. as

8.A. devoted B. abandoned C. thrown D. drawn

9.A. depressed B. dead. C. dangerous D. ill

10.A. typical B. traditional C. different D. familiar

11.A. wars B. illnesses C. letters D. prescriptions

12.A. meant B. intended C. planned D. said

13.A. divided B. sorted C. separated D. updated

14.A. sadly B. angrily C. softly D. loudly

15.A. curious B. enthusiastic C. fantastic D. positive

16.A. Christmas card B. envelope C. basket D. lipstick

17.A. found B. wrote C. recognized D. missed

18.A. astonishment B. sorrow C. sickness D. emotion

19.A. story B. message C. speech D. motto

20.A. in brief B. in private C. in danger D. in person

Every day we go to school and listen to the teacher,and the teacher will ask us some questions.Sometimes,the classmates will ask for your opinions of the work of the class.When you are telling others in the class what you have found out about these topics,remember that they must be able to hear what you are saying.You are not taking part in a family conversation or having a chat with friends—you are in a slightly unnatural situation where a large group of people will remain silent,waiting to hear what you have to say.You must speak so that they can hear you—loudly enough and clearly enough but without trying to shout or appearing to force yourself.

Remember,too,that it is the same if you are called to an interview whether it is with a professor of your school or a government official who might meet you.The person you are seeing will try to put you at your ease (not worried) but the situation is somewhat different from that of an ordinary conversation.You must take special care that you can be heard.

1.When you speak to the class,you should speak_______.

A. as slowly as possible B. in a low voice

C. loudly D. forcefully

2.Usually.when you speak to the class,the class is_______.

A. noisy B. quiet

C. having a rest D. serious

3.If you are having a conversation with an official,the most important thing for you is_______.

A. to show your ability

B. to be very gentle

C. to make sure that you can be heard

D. to put the official at ease

4.The main idea of this passage is_______.

A. that we should talk in different ways in different situations

B. that we must speak loudly

C. that we must keep silent at any time

D. that we must ta]k with the class

While inventions like the wheel and the Internet have changed the way the world works today, there are some creations that never quite got off the ground. Let’s look at the strangest inventions from across the globe.

THE TOMATO-FEEDING ROBOT

Japanese juice seller, Kagome, invented a robot that will feed you tomatoes with its long metal arms extended on either side of your face while you run. Originally created for the Tokyo Marathon, the robot even has a timer so that tomato-eating runners won’t use up their supply too quickly.

THE ROLLING BENCH

It’s lunchtime and many people may be looking for a park bench to sit on, but the rain has made every surface humid. This is when the rolling bench comes in. When one side is too wet, a handle on the side can roll up another dry side for better sitting conditions. The inventions come from designer Sung Woo Park, from Seoul in South Korea.

THE LED SLIPPERS(拖鞋)

We all hate hurting our toes in the dark, but a revolutionary footwear design can prevent this from happening again. The slightly strange LED slippers are designed to be comfortable, yet shine your path at night. With two in-built LED lights at the top of each slipper, the users can direct their toes at any area that needs light.

THE FOOT-POWERED BICYCLE

It’s the unusual invention of German designers Tom Hambrock and Juri Spetter. Besides an unusual appearance, its function is also slightly strange, as the user must run to get the bicycle moving. As soon as the riders have enough momentum(动力), they’re able to rest their feet on the back wheel and use the handlebars to control its direction.

1.What can we know about the tomato-feeding robot from the text?

A. It’s popular with lazy eaters.

B. It was the creation of a Korean.

C. It was designed for a sports event.

D. It has two plastic arms.

2.Which of the following can replace the underlined word “humid” in the text?

A. Dirty. B. Wet.

C. Unsafe. D. Uncomfortable.

3.Which invention was designed for its users’ safety?[

A. The LED slippers.

B. The rolling bench.

C. The foot-powered bicycle.

D. The tomato-feeding robot.

4.What can we infer about the inventions mentioned in the text?

A. They bring us speed improvement.

B. Their inventors are all from Asia.

C. They are powered by electricity.

D. They can serve us in different ways.

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