Competitions and Personal Development (1)生活中到处充满着竞争。 (2)竞争对于个人发
Competitions and Personal Development (1)生活中到处充满着竞争。 (2)竞争对于个人发展的重要性。 (3)你的看法。
Competitions and Personal Development (1)生活中到处充满着竞争。 (2)竞争对于个人发展的重要性。 (3)你的看法。
A.Scientists have found that an athlete"s heart requires a period of time to adjust to working at high altitudes.
B.Scientists have found that the body" s total volume of blood declines by as much as 25 percent at high altitudes.
C.Middle-distance runners who train at high altitudes sometimes lose races to middle-distance runners who train at sea level.
D.The performances of athletes in competitions at all altitudes have improved markedly during the past twenty years.
E.At altitudes above 5,500 feet, middle-distance runners often better their sea-level running times by several seconds .
Popular papers are generally smaller with 【C17】______ columns per page. They have bigger headlines and more photographs. The articles are shorter and there are fewer per page. 【C18】______ devices are not only used to make the paper more attractive; they may also influence 【C19】______ the reader reads. Large headlines, pictures and position on the page all serve to 【C29】______ the reader's attention to one article rather than another.
【C1】
A.elements
B.components
C.functions
D.achievements
听力原文: Ice dancing developed from ballroom dancing, particularly the waltz, and was very popular in the early 1900s. It requires well-trained, exact footwork; conformity with one another's steps; and a keen sense of timing and rhythm. Ice dancing differs from pairs skating in that ice dancers are restricted to lifts no higher than the man's shoulders and there are no jumps. One skate must be on the ice at all times.
Ice dancing competitions are made up of three principal parts as following.
The first part to perform. is compulsories. Partners must perform. two dances selected by the ISU, for example, waltz, tango, or polka. It involves set patterns in which dancers perform. and repeat steps at certain points around the arena. Although the steps are predetermined, dancers are encouraged to interpret them for artistic charming. Each dance counts for 15 percent of a pair's final score.
The original dance, formerly known as the original set pattern dance, requires skaters to design their own performance to their choice of music, set to a speed and rhythm previously announced by the ISU. It counts for 35 per cent of the final score, and skaters receive marks for composition and presentation.
In the free dance, the partners perform. a dance to music of their choice. They are given marks for presentation and style. as well as for technical value. This dance counts for 50 percent of the final score.
(30)
A.Ice dancing requires exact footwork and a keen sense of music.
B.Partner shouldn't be raised too high or jump during ice dancing.
C.Ice dancing needs conformity with each other and jump.
D.Partner should be lift higher and the other be on the ice all the times.
Everyone knows a stone bounces best on water if it's round and flat, and spun towards the water as fast as possible. Some enthusiasts even travel to international stone-skimming competitions, like world champion Jerdone Coleman-McGhee, who made a stone bounce 38 times on Blanco River, Texas, in 1992.
Intuitively,a flat stone works best because a relatively large part of its surface strikes the water, so there's more bounce. Inspired by his eight-year-old son, physicist Lyderic Bocquet of Lyon University in France wanted to find out more. So he tinkered with some simple equations describing a stone bouncing on water in terms of its radius(半径) ,speed and spin, and taking account of gravity and the water's drag.
The equations showed that the faster a spinning stone is travelling, the more times it will bounce. So no surprise there. To bounce at least once without sinking, Bocquet found the stone needs to be travelling at a minimum speed of about 1 kilometre per hour.
And the equations also backed his hunch(直觉) that spin is important because it keeps the stone fairly flat from one bounce to the next. The spin has a gyroscopic(陀螺的) effect, preventing the stone from tipping and falling sideways into the water.
To match the world record of 38 bounces using a 10-centimetre-wide stone, Bocquet predicts it would have to be travelling at about 40 kilometres per hour and spinning at 14 revolutions a second. He adds that drilling lots of small pits in the stone would probably help, by reducing water drag in the same way that dim pies on a golf ball reduce air drag. "Although I suppose that would be cheating," says Bocquet.
He and his team at Lyon hope to design a motorized "catapult" that can throw stones onto a lake with a precise speed and spin, to test if the predictions stand up.
Bocquet adds that he's probably just rediscovering a piece of history. British engineer Barnes Wallis must have done the same sort of maths and experiments when he was designing his famous bouncing bombs for the Dambusters squadron(中队) during the Second World War.
Which of the following could be the best title for this passage?
A.International stone-skimming competitions.
B.How to make stone-skimming more enjoyable.
C.Stone-skimming is a sacred thing.
D.The mathematical formula for stone-skimming.
A.There are various standards to judge climbing competitions.
B.Climbing competitions are attractive to various kinds of climbers.
C.Only very skilled climbers can participate in climbing competitions
D.Climbing competitions have won the support of many associations.
A.Reading difficult books.
B.Competing in athletic competitions,
C.Talking with some friends,
D.Encountering an unresolved issue.
Victoria likes competitions more than anything else.
A.Right
B.Wrong
C.Doesn't say
A.There are various standards to judge climbing competitions.
B.Climbing competitions are attractive to various kinds of climbers.
C.Only very skilled climbers can participate in climbing competitions
D.Climbing competitions have won the support of many associations.
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