If we observe carefully, we van find that most of the flowers in nature are red, orange and yellow. If we have seen a black flower, it’s a chance in million. People have made a census(普查)to colours of more than four thousand kinds of flowers and discovered that only eight of them are black. Why?
As we know, sunlight is formed by seven different kinds of coloured 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 delicate(纤弱) and prone(易于) 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 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.
That is why red, orange and yellow flowers are very common in nature while black flowers are so rare.
1.We can hardly find black flowers because _____.
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A．they are so weak that it’s difficult for them to grow up |
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B．there are no black flowers in the world. |
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C．the petals of black flowers are very delicate |
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D．they can take in the light of all wave lengths, which make the flowers dry up |
2. Sunlight is formed by _____.
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A．many different kinds of coloured light |
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B．three different kinds of coloured light—red, orange and yellow |
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C．seven different kinds of coloured light |
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D．four thousand kinds of coloured light |
3.The red, orange or yellow light contains _____.
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A．less heat than the other lights |
B．more heat than the other lights |
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C．a great deal of heat |
D．a little heat |
4.“It is a chance in a million” means_____________
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A．it is common |
B．it is extremely rare |
C．it’s lucky |
D．it’s impossible |
教学练新同步练习系列答案
课前课后同步练习系列答案科目：高中英语 来源：2012-2013学年江西省上饶市横峰中学高二第一次月考英语试卷（带解析） 题型：完型填空
Last week I went to a supermarket. After I 36 the bill and was passing through the door, the alarm suddenly started to ring. Suddenly, a young guard ran toward me and ordered me to 37 him. I felt so upset and 38 . He took me to a small room, but I was 39 frightened that I stopped at the door. Finding me 40 to enter the room, he shouted that I had to go into the room.
He closed the door. I thought he was going to hurt me. Suddenly, a 41 voice said in my ear, “Take out the things you've stolen!” “I stole nothing.” I said. “Do as I tell you. If we find them, you’ll be in trouble.” “There is nothing.” I answered. “I didn't take anything.” I said, taking everything out of my pockets and bag.
42 this point, a guard came in and asked a salesgirl to 43 me. 44 , they found nothing.
But they didn't believe that I hadn't stolen anything. So the young guard ordered me to pass through the door alarm again.
I was 45 when it rang again. I felt 46 and burst into tears. I didn't know how to prove 47 I was innocent.
They made me go into the small room again.
“Take out the stolen things quickly, 48 we will dial 110.” They said.
“OK, call the police. I’ m not afraid.” I said 49 .
Suddenly, they 50 their tone. After a while, a salesgirl asked me to raise my feet. I did 51 she had told me. There was a label (标签) on the bottom of my shoe. That was it! That was the 52 thing that had brought me such great trouble. But it 53 my innocence.
After that, they 54 to me in the small room. But they should have apologized 55 , shouldn't they? A lot of people were there when I was taken away. What did they think of me?
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科目：高中英语 来源：2011-2012学年江西省白鹭洲中学高一下学期第二次月考英语试卷（带解析） 题型：完型填空
I was sitting in the surgical waiting area at the hospital waiting for word of my wife's operation. The small room was filled with other families and friends who were 36 waiting to hear how their loved ones were doing.
There was a young boy sitting quietly in the__37__.He held a small box of__38__in one hand and a tablet( 写字板)in the other. Every so often he'd place the tablet on his lap and draw something. As the hours passed I began to see the room almost__39__.And there was a strange silence.
“Daddy，when is Mommy going home？”the young boy asked，breaking the__40__.
“Tomorrow，”his father replied. The boy picked up his crayons and__41__something on the tablet.
I _42__him as he moved his feet back and forth，looking up at the ceiling and then toward the sunshine－filled window.“When's__43__，Daddy？”he asked. His father__44__him over to sit by him. “Come，_45__here next to me，”he said with a gentle tone in his voice.
__46__his things，the little boy walked slowly to his father's side from the corner.
The man_47__out and held his son by his shoulders.
“There are three days in life. Yesterday，today and tomorrow. One is over and done，one we live in，the other we__48__.We can't live in yesterday，but if we are happy enough today，we will be even happier tomorrow，”he said in an attempt to__49__the boy.
The little boy looked at him for a moment and said，“If Mommy is going home tomorrow，I'll be__50__. So，I want it to be tomorrow already, Daddy.”
Now hanging on every word of this__51__，I leaned forward to hear his response. It was__52__.
“Son，the one great thing about today is once it__53__，it is already almost tomorrow.”
I thought about how__54__it was. Even in my adult life. I still live waiting for what tomorrow may__55__.Now I know that it is already “almost tomorrow.”
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科目：高中英语 来源：2011-2012学年北京西城区（南区）高二下学期期末质量检测英语试卷（带解析） 题型：完型填空
Last Friday my brother and I were driving home and had a fun conversation. So absorbed in our talk, my brother took a wrong turn.
Unfortunately, the wrong turn took us towards a 31 , and we had no way to turn 32 . __33 my brother paid the bridge fee and drove on. He was greatly 34 by his mistake and the needless 35 of $4.
We eventually reached an exit, and as we took it, my brother noticed a young fellow 36 over to the side. He came out of his car and tried to 37 someone. I was busy trying to 38 which way we would go next, but my brother stopped and asked the guy if he needed any 39 And he did. He had a flat tire and needed a tool to get it off.
My brother gave him a wrench（扳手）, and then helped him 40 the flat. The young man said that this had been a 41 week for him: earlier he had gotten into a minor car 42 , and now this tire was flat on his way home from work. But he called us “a breath of fresh air’’ and kept 43 us because he really would have been 44 if we hadn’t come along.
After we had finished the job, he thanked us again and pulled out $20 to give us. “No,” my brother said. “We were never 45 to even get on that bridge. We took a wrong turn. But now we know 46 we did. It was to help you. Thank you for turning our mistake into a（n） 47 to serve.”
What I loved most was 48 my brother throughout this process. He was able to turn his mistake into 49 energy to help others even in a negative situation, which could only come from a calm mind and an open 50 .
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科目：高中英语 来源：2011-2012学年度江苏省南通市通州区高一第一学期期中考试英语卷 题型：阅读理解
No one can change the weather. Nobody can control the weather. But if we read correctly the signs around us, we can tell what the more important changes in the weather will be. This way of telling what the weather will be like on the following day or two is called weather forecasting(天气预报).
For many centuries and in all countries, people have studied the weather and tried to make weather forecasting. Rings around the sun are a sign of coming rain. That many people feel their joints(关节) hurt is a sign of wet weather. Some birds fly high if fine weather is coming, but they fly near the ground if rainy or stormy weather is on the way. If you see a rainbow during rainy weather, this is a sign that the weather will become clear and fine. Such rainbows come in the evening. If the stars twinkle clearly at night, then fine weather will continue. If a fog appears in the morning just above a river, then the day will be warm. If the sunset is mostly red in colour, then the following day will be fine. If a rainbow appears in the morning, rainy weather will probably come.
Most of the above sayings have been made by the people who have used their eyes and brains to make weather forecasting.
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科目：高中英语 来源：2010-2011年海南省海南中学高一下学期期末考试英语卷 题型：阅读理解
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
We all know that money can’t buy happiness. No matter how much we earn, or how nice our clothing or cars or toys are, none of it will make us happier. __【小题1】_____ and the sad thing is that it could take us decades of pursuing wealth and luxury(奢侈) items before we realize this.
So what will bring us happiness? ___【小题2】__ these three things have been proven by surveys of hundreds of thousands of people about what they have, what their lives are like, and how happy they are.
_____【小题3】_____ We have a human need to be close to other human beings. Having good, supportive friendships, a strong marriage or close and loving relationships with our family members will make us much more likely to be happy. So take time to stay with your loved ones, to tell them what they mean to you, to listen to them.
Positive thinking can lead to happiness too. In fact, optimism and self-confidence are some of the indicators(迹象)of people who lead happy lives. So remember to get into the habit of squashing(排除)all negative thoughts and replacing them with positive ones.___【小题4】____
The state we enter when we are completely focused on the work or task before us will almost undoubtedly lead to happiness. People find greatest enjoyment not when they are doing mindless work, but when they are absorbed in a mindful challenge.____【小题5】_____ turn off the TV, get outside and do something that truly attract you.
You’ve been given the Three Secrets to Happiness. Don’t waste them.
| A．Instead of “I can’t” think “I can”. |
| B．You will have good relationships with peoples around you. |
| C．But many times we act as if we’d be happier with a bit more money. |
| D．Luckily, it’s three things that don’t cost a thing. |
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