更多"[单选题]Long ago men learned that the "的相关试题:
[单选题]Long ago men learned that the world of nature is built with mathematical exactness according to refined and powerful laws; every bee stokes its wings exactly 440 times a second to propel itself forty miles an hour; the eye of every fly has exactly 7,000 lenses; every spider′ s thread is composed of 300 single threads.
The progress of civilization itself can be measured by its range of mathematics. The early Egyptians know enough of geometry to build the pyramids and the Greeks used trigonometry to measure the circumference of the earth two thousand years before Columbus sailed. European civilization combined geometry and trigonometry with the decimal system of the Arabs to produce the maps with which the European explored the world. In a later century, mathematicians studied the pendulum ( 钟摆 ) of the newly invented clock and created the language of calculus to measure motion.
The yardstick of measurement today must cover everything from units tinier than atoms to distance of millions of light years. Speed and accuracy are vital. Man can never send a racket to Mars unless he knows the exact distance to the planet. Since the slightest error could mean missing it by 30,000 miles. In navigating amid the planets and stars, man must have the help of some kind of machine calculators for fast and absolutely accurate information.
Where does the passage most probably come from?
A.A new report.
B.A book review.
C.A science magazine.
D.A maths textbook.
[单选题]根据下面资料，回答
Long ago men learned that the world of nature is built with mathematical exactness according to refined and powerful laws; every bee stokes its wings exactly 440 times a second to propel itself forty miles an hour; the eye of every fly has exactly 7,000 lenses; every spider′ s thread is composed of 300 single threads.
The progress of civilization itself can be measured by its range of mathematics. The early Egyptians know enough of geometry to build the pyramids and the Greeks used trigonometry to measure the circumference of the earth two thousand years before Columbus sailed. European civilization combined geometry and trigonometry with the decimal system of the Arabs to produce the maps with which the European explored the world. In a later century, mathematicians studied the pendulum ( 钟摆 ) of the newly invented clock and created the language of calculus to measure motion.
The yardstick of measurement today must cover everything from units tinier than atoms to distance of millions of light years. Speed and accuracy are vital. Man can never send a racket to Mars unless he knows the exact distance to the planet. Since the slightest error could mean missing it by 30,000 miles. In navigating amid the planets and stars, man must have the help of some kind of machine calculators for fast and absolutely accurate information.
The author shows how the exactness of nature′s laws is reflected in___________.
A.the language of calculus
B.the measurement of motion
C.the creatures of nature
D.the progress of civilization
[单选题]The defense works_________long ago to keep the enemy away.
A.were built
B.has been built
C.had been built
D.was built
[单选题]Text 3 How long is too long for young adults to live at home after college?In a recent survey by TD Ameritrade,teenagers on average said it would become embarrassing to still be living at home at age 26.Young adults aging 20 t0 26-probably because they've already been out in the real world-thought the cutoff should be 28,But 27 percent of those surveyed said they wouldn't be ashamed to be living at home even in their thirties or so.Here's the reality:Nearly half of post-college millennials have moved back home.Wages are stagnant,and many graduates with debt find it's hard to live on their own.Survey participants said their debt is causing them to delay saving for retirement,buying a home,getting married and having children.Twenty percent said the education they received wasn't worth the debt they accumulated."ln many cases,people view young adults moving back home as a sign that they were lazy or not doing things'right,'"said J.J.Kinahan,chief strategist at TD Ameritrade."But many people doing it are being fiscally responsible."I've long advocated for young adults graduating with burdensome debt to move back home if they can.I'll go even further.College graduates should make every effort to find a job in the area where their parents live or another relative or friend is nearby.And in exchange for rent-frce living,they should pledge to extinguish as much of their student-loan debt as they can.You may think that living at home is an improper failure to launch or that it delays the all-important lesson of learning to be independent.But may I suggest we all make an effort to remove the stigma of young adults returning home as a financial embarrassment?It is not,especially if parents allowed or encouraged a student to attend a college that necessitated some heavy borrowing.Soon-to-be graduates often ask me for advice on how to pay off their student loans.Some don't even know how much they owe.But they know it's more than they can comfortably handle on their starting salaries.What they're really asking for is a miracle.They ask hoping there's some get-out-of-debt-free card.Although there is a public service debt forgiveness program for borrowers working for the govemment or a not-for-profit group,the vast majority of borrowers won't get the relief they seek.33.The author suggested that young adults ought to
A.find a job to pay offtheir debts.
B.get firiancial assistance from their family.
C.manage to repay their student-loan debt.
D.be as independent as possible.
[不定项选择题]共用题干
TV Shows and Long Bus Trips Long bus rides are like televisions shows.They have a beginning,a middlle,and an end-with commercials thrown in every three or four minutes.The commercials are unavoidable.They happen whether you want them or not.Every couple of minutes a billboard glides by outside the bus window.“Buy Super Clean Toothpaste.""Drink Good‘n’Wet Root Beer.""Fill up with Pacific Gas."Only if you sleep,which is equal to turning the television set off,are you spared the unending cry of"You Need It!Buy It Now!" The beginning of the ride is comfortable and somewhat exciting,even if you've traveled that way before.Usually some things have changed-new houses,new buildings,sometimes even a new road.The bus driver has a style of driving and it's fun to try to figure it out the first hour or so.If the driver is particularly reckless or daring,the ride can be as thrilling as a suspense story.Will the driver pass the truck in time?Will the driver move into the right or the left-hand lane?After a while,of course,the excitement dies down.Sleeping for a while helps pass the middle hours of the ride.Food always makes bus rides more interesting.But you've got to be careful of what kind of food you eat.Too much salty food can make you very thirsty between stops. The end of the ride is somewhat like the beginning.You know it will soon be over and there’s a kind of expectation and excitement in that.The seat,of course,has become harder as the hours have passed.By now you've sat with your legs crossed,with your hands in your lap,with your hands on the arm rests-even with your hands crossed behind your head.The end comes just at the right time.There are just no more ways to sit.
The writer thinks that the end of the ride is somewhat like the beginning because both are______.
A.exciting
B.comfortable
C.tiring
D.boring
[不定项选择题]共用题干
World Heart Day
Sunday was World Heart Day.The World Heart Federation and its member groups in
more than one hundred countries organized the celebrations.The World Health
Organization and other United Nations agencies provided support for the__________(1).
World Heart Day was first observed six years________(2).Organizers proposed
the event as a way to help reduce the spread of heart disease.The World Heart Federation
says heart_________(3)kills seventeen million people each year.
The group urges people to be active and have a good,healthy diet.It also warns
_________(4)activities known to increase a person's risk of heart attack or stroke.
Some of the warnings are directed at children.The World Heart Federation says about
twenty-two million boys and girls under the age of five are obese-severely overweight.
Children are normally energetic and active.________(5),two thirds of all
children are not active enough.Such children greatly__________(6)their risk of
becoming obese.They also increase their_________(7)of developing heart disease or
other disorders.
One message of World Heart Day is to eat right.Children__________(8)eat a
healthy and balanced diet.Also,limit sugary drinks,sweets and eating between meals.
The World Heart Federation urges parents to keep their children__________(9).It
says physical exercise helps to decrease the risk of obesity and_______(10)a child
healthy.Obese children often become obese adults.________(11)you believe your
child is too heavy,talk with a health care provider.
The World Heart Federation is also concerned about the effects of tobacco on young
people.It says the younger someone begins to smoke,the_________(12)the chance
of a health problem tied to smoking.Half of the young people who continue to smoke are
________(13)to die later in life from a smoking-related disease.
The group says almost half of all children live with a smoker. It says children who live
with a_________(14)can breathe an amount of tobacco equal to more than two
thousand cigarettes.And that is by the time they are five years old.
The World Heart Federation also says parents should warn children not to be
______(15)by tobacco companies.And it says parents who smoke should try to stop.
_________(15)
A.influenced
B.bought
C.employed
D.troubled
