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The red, orange and yellow lights contain ______.
A．less heat than the other lights
B．more heat than the other lights
C．a great deal of heat
D．a little heat
答案
更多“The red, orange and yellow lights contain ______.A．less heat than the other lightsB．more h”相关的问题
第2题
A.go with the setting
B.compare with the setting
C.contrast with the setting
D.conform to with setting
第4题
以下哪项不属于常用荧光素（)。
A.<499nm蓝色荧光(blue)
B.500-549nm，绿色荧光(Green)
C.550-584nm，紫色荧光(Yellow)
D.585-615nm，橙色荧光(Orange)
E.616-700nm，红色荧光(Red)
第5题
Stamp collectors }lave paid $16,800 for ______.
A．twelve Two Penny Blues
B．fourteen One Penny Orange — Reds
C．a Two Penny Blue
D．a one Penny Orange — Red
第6题
As we know, sunlight is formed by seven different kinds of colored light. The wave length of each light changes, so the quantity of heat in each light changes, too. Flowers, especially their petals (花瓣) , are very weak and easy to the harm caused by high temperature. Black flowers can take in all the light waves, which cause the flowers to dry up in a high temperature. So the black flowers can hardly continue their lives. But red flowers, orange flowers and yellow ones can protect themselves from sunlight by reflecting (反射) the red light, orange light and yellow light, each of which has a large quantity of heat.
That is why red, orange and yellow flowers are very common in nature while black flowers are so unusual.
We can hardly find black flowers because ______.
A．they are easy to be eaten by animals
B．there are no black flowers in the world
C．the petals of black flowers are too strong
D．the light waves make the flowers dry up
第7题
听力原文： Most flowers in nature are red, orange and yellow. If we have seen a black flower, it's a chance in a million. Researchers have made research on more than four thousand kinds of flowers and discovered that only eight of them are black.
As we know, sunlight is formed by seven different colored lights. The wave length of each light is different, so the quantity of heat in each light is also different. Flowers, especially their petals are easy to be harmed by high temperature.
Black flowers can take in all the light waves, which cause the flowers to dry up in a high temperature. So black flowers can rarely survive sunlight. But red flowers, orange flowers and yellow flowers can protect themselves from sunlight by reflecting the red light, orange light and yellow light, each of which has a large quantity of heat.
(30)
A．Only eight of the fourteen thousand kinds of flowers are black.
B．Only eight of the four thousand kinds of flowers are black.
C．The chance that we see black flowers is one-5000th.
D．The chance that we see black flowers is one 4000th.
第8题
The warm colors are red, orange and yellow. Where there are warm colors and a lot of light, people usually want to be active. People think that red, for example, is exciting. Sociable people, those who like to be with others, like red. The cool colors are green, blue and violet. These colors, unlike warm colors, are relaxing. Where there are cool colors, people are usually quiet. People who like to spend time alone often prefer blue.
Red may be exciting, but one researcher says that time seems to pass more slowly in a room with warm colors than in a room with cool colors. He suggests that a warm color, such as red or orange is a good color for a living room or restaurant. People who are relaxing or eating do not want time to pass quickly. Cool colors arc better for offices of factories if the people who are working there want time to pass quickly.
Researchers do not know why people think some colors are warm and other colors are cool. However, almost everyone agrees that red, orange, and yellow are warm and that green, blue, and violet are cool. Perhaps warm colors remind people of warm days and the cool colors remind them of cool days. Because in the north the sun is higher during summer, the hot summer sunlight appears yellow.
Which of the following colors belong to cool colors？
A．Yellow, green.
B．Blue, violet.
C．Black, blue.
D．Brown, white.
第9题
听力原文： Researchers do not know why people think some colours are warm and other colours are cool. However, almost everyone agrees that red, orange, and yellow are warm and that green, blue, and violet are cool. Perhaps warm colours remind people of warm days and cool colours remind them of cool days. Because in the north the sun is low during the winter, the sunlight appears quite blue. Because the sun is higher during the summer, the hot summer sunlight appears yellow.
People associate colours with different holidays. For example, red is associated with Valentine's Day. On February 14th, Americans send red hearts to people they love. People associate orange with Halloween in October and Thanksgiving Day in November. On October 31 st, many Americans put large orange pumpkins in their windows for Halloween. Many people wear green on St. Patrick's Day, March 17th. Violet is a dignified colour which is associated with Easter. On Easter Sunday, people decorate baskets with purple ribbons.
Many expressions in English use colours. These expressions show how people feel about the colours. For example, people associate red with a strong feeling like anger. When someone is very angry, people say that he or she sees red. Red is an active colour. A red-letter day is a lucky day. When criminals are caught in the middle of a crime, people say that they are caught red-handed. Green is the colour of grass and leaves. When someone grows plants well, people say he or she has green fingers. Blue is a sad, thoughtful colour. When someone is very sad, people say he or she is feeling blue. Blues is a kind of jazz that is usually very sad and slow.
(33)
A．A warm colour is a colour that is often used in restaurants.
B．A warm colour is a colour that gives off heat.
C．A warm colour is a colour near the red end of the light spectrum.
D．A warm colour is a colour that makes people feel upset.
第10题
Where would this announcement be heard？
A．At a subway station.
B．In a hotel.
C．On an airplane.
D．At an airport.
