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The author compares John Moodys use of a go-kart engine on a hang glider toA．a marriageB．t

The author compares John Moodys use of a go-kart engine on a hang glider to

A．a marriage

B．the flight of Icarus

C．cruising in a snowmobile

D．soaring and gliding from a high altitude

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更多“The author compares John Moody…”相关的问题

第1题

The author compares the formation of glaciers to______.A．the gradual transformation of sno

The author compares the formation of glaciers to______.

A．the gradual transformation of snow flakes

B．the formation of crystals

C．the long gestation of a baby

D．the formation of air bubbles

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第2题

The author compares meat eating to cigarette smoking because ______.A．cigarette smoking an

The author compares meat eating to cigarette smoking because ______.

A．cigarette smoking and meat eating are all personal habits

B．meat eating and cigarette smoking can lead to some disease like lung cancer

C．both meat eating and cigarette smoking cost a lot of economic and social resources

D．eating meat can be expensive if people like to smoke at the same time

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第3题

The author compares the warlike qualities of Bismarck and of Hitler in order to illustrate

that

A．researchers generally prove whatever they want

B．research design and procedure may invalidate the findings

C．The Correlates of War' project is notorious for its faulty research techniques

D．the preliminary findings of The Correlates of War" project are invalid

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第4题

In lines 24-27 the author most likely compares the movements of the Cardinal to those of a

circling eagle in order to emphasize his

A．flightiness

B．love of freedom

C．eminence

D．sense of spirituality

E．mercilessness

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第5题

The author compares the effect of airliners on the environment and that of the cars and co

ncluded that the effect of the former is less because the number of airplanes is much smaller than that of the cars.

A．Y

B．N

C．NG

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第6题

Atmospheric pressure can support a column of water up to 10 meters high. But plants can mo

ve water much higher. the sequoia tree can pump water to its very top, more than 100 meters above the ground. Until the end of the nineteenth century, the movement of water in trees and other tall plants was a mystery. Some botanists hypothesized that the living cells of plants acted as pumps. But many experiments demonstrated that the stem of plants in which all the cells are killed can still move water to appreciable heights. Other explanations for the movement of water in plants have been based on root pressure, a push on the water from the roots at the bottom of the plant. But root pressure is not nearly great enough to push water to the tops of tall trees. Furthermore, the conifers, which are among the tallest tress, have unusually low root pressures.

If water is not pumped to the top of a tall tree, and if it is not pushed to the top of a tall tree, then we may ask.. How does it get there？ According to the currently accepted cohesion-tension theory, water is pulled there. The pull on a rising column of water in a plant results form. the evaporation of water at the top of the plant. As water is lost form. the surface of the leaves, a negative pressure, or tension, is created. The evaporated water is replaced by water moving from inside the plant in unbroken columns that extend from the top of a plant to its roots. The same forces that create surface tension in any sample of water are responsible for the maintenance of these unbroken columns of water. When water is confined in tubes of very small bore, the forces of cohesion(the attraction between water molecules)are so great that the strength of a column of water compares with the strength of a steel wire of the same diameter. This cohesive strength permits columns of water to be pulled to great heights without being broken.

How many theories does the author mention？

A．One

B．Two

C．Three

D．Four

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第7题

Bill Gates compares his hard work on a PC to "tap dancing to work".A.Right

Bill Gates compares his hard work on a PC to "tap dancing to work".

A.Right

B.Wrong

C.Not mentioned