题型:阅读选择 题类:真题 难易度:困难
江苏省连云港市2020年中考英语试卷
We always think that it's OK for us to leave our plants home during our vacation as plants won't scream like pets, right?
A recent study done by a group of scientists at the Tel Aviv University has discovered that some plants will scream when they are under stress.
The research was carried out on tomato plants and tobacco plants by cutting their stems (茎) and depriving (剥夺) them of water. A microphone was placed 10cm away from them. When their stems were cut, the plants started "screaming" between 20 and 100 kilohertz, and the scientists guess that this scream is probably meant to warn other plants nearby.
When the tomato plants' stems were cut, 25 ultrasonic (超声的) pain sounds were recorded in an hour, and at the same time, 15 ultrasonic pain sounds were recorded from the tobacco plants. When they were deprived of water, the tomato plants recorded even more pain sounds with 35 pain sounds in an hour while the tobacco plants recorded about 11 pain sounds.
The plants also acted differently to different kinds of stresses. For example, the tobacco plants gave out a stronger "scream" when they were deprived of water than when their stems were cut. But plants that were in no immediate (立刻的) danger gave out less than one ultrasonic sound per hour.
The group of scientists said that plants are not as quiet as we had always thought, but in fact their voices are so high-pitched that we just can't hear them.
Last year, another study has found out that plants feel pain when they are touched or hurt and they will give off a terrible smell.
Food waste is common in many schools. Students at Whitewater Middle School in the US once found 200 pounds (90. 7kg) of food had been thrown away after just one of their school's daily meals. They said it was both unpleasant and educational.
A student said, "You don't realize how much food waste you're making till you see it. " To deal with this problem, Whitewater has added environmental science as a new school program this year. Teachers will lead students to do research about how food connects with the environment, poverty (贫穷) and people's health.
Whitewater teachers make sure students know how their own eating habits are part of bigger problems. In environmental literature (文学) classes, students read books such as Fast Food Nation: The Dark Side of the All-American Meal.
Teacher Lyman says that in language arts classes, students discuss why poor people often have less healthy food. Lyman says she wants students to ask themselves some basic questions: "What do we eat? What do we waste?
The situation of food waste in Whitewater Middle School | The students once {#blank#}1{#/blank#}as much food as 200 pounds after just one of their school's daily meals. |
The{#blank#}2{#/blank#}of solving the problem | ⒈Environmental science has been{#blank#}3{#/blank#}as a new school program this year. Students discuss the connection between food and the environment, poverty and people's health. ⒉Environmental literature classes are opened. Students know their eating habits can cause many big{#blank#}4{#/blank#}. ⒊In language arts classes, students discuss the{#blank#}5{#/blank#}why the poor people get less healthy food. |
A. Use the stairs(楼梯) during the fire. B. Animals have a good sense of smell. C. It's very dangerous to do like that. D. It can stop the smoke from coming in. E. Don't try to put out a fire by yourself. F. It's easier to breathe there and see things. |
November 5th is National Safety Day in China. What should you do if there is a fire?
※Get help from your parents or call 119. {#blank#}1{#/blank#}
※Get out of the room as soon as you can. If there's a lot of smoke in your room, stay close to the floor. {#blank#}2{#/blank#}
※{#blank#}3{#/blank#} An elevator(电梯) may stop working at any time.
※Don't go back for your pet or anything else. {#blank#}4{#/blank#} They often get out before you do.
※If you can't get out of your room, close the door and put a blanket(毯子) or a quilt at the foot of the door. {#blank#}5{#/blank#} Open the window and shout for help.
※If your coat catches fire, remember these words: Stop, drop and roll(滚动).
book and I seven on under red be friend we see look |
My name is Betty. {#blank#}1{#/blank#} am twelve. I have some {#blank#}2{#/blank#}. We are middle school students. We are in Class Two, Grade {#blank#}3{#/blank#}. This is Miss Green. She teaches{#blank#}4{#/blank#}English.
This is my new classroom. In the classroom you can see many desks {#blank#}5{#/blank#}chairs. A blackboard, a clock and a map of China are {#blank#}6{#/blank#}the wall. On a desk you can see some pencils. The {#blank#}7{#/blank#} one is mine. The green one is Mike's. Kate's pencil isn't there. Her pencil {#blank#}8{#/blank#} in her backpack (背包).
Look! You can {#blank#}9{#/blank#} a ball under the desk. That's Kate's desk. The ball is Kate's too. This is my desk. You can see some {#blank#}10{#/blank#} on it.
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