题型:阅读选择 题类:常考题 难易度:普通
广东深圳锦华实验学校2016-2017学年八年级上学期英语第一次月考试卷
Most of the flowers in nature are red, orange and yellow. If we have seen a black flower, it's chance in a million.
People have made a survey to colors of more than four thousand kinds of flowers and discovered that only eight of them are black.
As we know, sunlight is formed by seven colored lights. The wavelength of each light is also different, so the quantity(量) of heat in each light is also different. Flowers, especially their petals(花瓣), are easy to be harmed by high temperature.
Black flowers can take in the light of all the wavelengths that make them dry up because of high temperature, so black flowers can hardly resist(抵抗) sunlight. But red, orange and yellow flowers 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.
A. Who gets the flu? B. What is the flu? C. When did the flu first appear? D. Why is the flu dangerous? E. What is the difference between the flu and a cold? |
Flu (流感)season is coming! Are you prepared? Here are answers to your question!
{#blank#}1{#/blank#}
The flu is a virus(病毒) that passes easily from person to person. Usually the flu appears in winter and the rainy season.
{#blank#}2{#/blank#}
In fact,they come from different viruses. Although the symptoms(症状) can be almost the same,flu symptoms are more serious. Cold symptoms only last about seven days while the flu can last two weeks.
{#blank#}3{#/blank#}
The seasonal flu is very common all over the world. Children,old people and people in poor health catch the flu easily. In the United States,five to twenty percent of the people pet the flu every year.
{#blank#}4{#/blank#}
The flu is pretty dangerous. It can give you fever(发烧) or even make you die. Every year in some countries.
In your opinion, how to keep us away from the flu?(no more than 20words) {#blank#}5{#/blank#}
试题篮