北师大版(2019)必修第二册《Unit 5 Humans and nature Lesson 1》2021年同步练习卷
发布:2024/4/20 14:35:0
Ⅰ.单词拼写
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1.He was very
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2.It's a complete
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3.We can always find new beauty in Shakespeare's
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4.People are
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5.Those organisms that are most suited to the environment will
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6.He gave us a w
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7.He is fed by a
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8.You can't see the full
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Ⅱ.七选五
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25.The Amazon Rainforest:A Natural Treasure Welcome to the Amazon rainforest.As the largest rainforest in the world,it plays a significant role in maintaining the fine balance of the Earth's ecosystem.
The Amazon rainforest crosses into eight countries.With an area of around 5.5 million square kilometres,the Amazon rainforest is more than half the size of China.The Amazon River,from which the rainforest gets its name,is about 6,440 kilometres in length.On its journey from the mountains to the ocean,the river supports many different ecosystems.(1)
Of the 390,000 plant species known to man,more than 40,000 can be found in the Amazon rainforest.The forest's different levels support an unbelievable variety of wildlife.At the bottom,there is a system of roots beneath the ground.Above that is the mass of leaf litter on the dark forest floor.(2)
More than 1,300 species of birds and over 400 species of mammals hide among the jungle's plant life.The jaguar is one example.It has yellowish-brown coat with black spots.While a significant number of jaguars survive here,they are only one element of this forest's food chain. (3)
The Amazon rainforest breathes life into the planet by fixing carbon and producing over 20 percent of all the Earth's oxygen.(4)
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A.They feed on at least 87 species,including frogs
B.Thus,it is often known as the "lungs of the planet"
C.Rivers tend to be the easiest way to enter the forest
D.The next level is made up of shorter plants with large leaves
E.They give this area the richest species of plants and animals on the Earth
F.Currently the trees in the Amazon rainforest take in around 500 million tonnes of CO2 each year
G.Over the past 50 years,17 percent of the rainforest has disappeared due to human activities组卷:5引用:2难度:0.4
Ⅲ.语法填空
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26.Starting a wildlife conservation center is a necessary(1)
But things changed this year. "As crazy as it sounded,because of my efforts,I received a secret donation:$9,000," Thomas said.She decided to use the money(5)
Thomas said, "Ever since I advertised the animal rescue in the street,I(7)组卷:55引用:6难度:0.5