相关试卷
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1、 阅读短文，回答问题
The Importance of Wetlands
Wetlands are important ecosystems on earth. They cover about 6% of the earth's land area, but they are home to about 40% of the world's plants and animals. Wetlands can be found in many places, from small ponds to large areas near rivers and lakes.
One of the most important jobs of wetlands is to clean water. Plants in wetlands help get rid of pollution and make the water clean. Wetlands can also help prevent floods. During heavy rains, wetlands store water like giant sponges. This helps reduce the risk of floods in nearby areas.
Wetlands are also home to many rare and endangered species. For example, the red-crowned crane lives in wetlands. Without wetlands, these animals would have no place to live and could die out.
However, wetlands are facing many problems. People are using wetland land for farms and buildings, which reduces the size of wetlands. Pollution from factories and homes also harms wetlands. We need to protect wetlands to keep our environment healthy.
(1)、What percent of the earth's land area do wetlands cover?A、About 6%. B、About 40%. C、About 71%. D、About 70%.(2)、What can wetlands do to help during heavy rains?A、Cause floods. B、Store water. C、Make pollution. D、Kill animals.(3)、Why are red-crowned cranes mentioned in the passage?A、To show they are common animals. B、To show wetlands are important for rare species. C、To show they live everywhere. D、To show they are not in danger.(4)、What is one problem wetlands are facing?A、Too much water. B、Being used for farms. C、Too many plants. D、Too little pollution.(5)、What's the main idea of the passage?A、Wetlands are not important. B、How to visit wetlands. C、The importance of wetlands and the problems they face. D、Animals living in wetlands. -
2、 语法段落填空
The ocean (be) a large ecosystem. It (cover) about 71% of the earth's surface. The ocean (produce) about 70% of the earth's oxygen. It (hold) a lot of water. The water (rise) to the sky, falls onto the land, and then (return) to the ocean. This cycle (help) keep the earth's water clean.
But now the ocean (face) many problems. There (be) a lot of plastic waste in the ocean. We should (take) action to protect it.
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3、 The (生态系统) of the ocean is very important.
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4、 We need to (保护) our natural world.
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5、 Coral reefs are in danger because of (污染).
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6、 The (气候) in the desert is very dry.
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7、 Wetlands help get r of pollution.
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8、 The Arctic is facing serious p due to climate change.
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9、 Plants can s water in their roots.
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10、 The Great Barrier Reef is the largest coral r in the world.
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11、 We should p wild animals from being killed.
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12、 The e includes all living and non-living things in an area.
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13、 It's important ____ the environment.A、protect B、to protect C、protecting D、protected
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14、 The wetlands（湿地） ____ many kinds of plants and animals.A、is home to B、are home to C、is home of D、are home of
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15、 We can help protect ecosystems ____ planting more trees.A、by B、with C、for D、at
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16、 ____ the climate is changing, animals are losing their homes.A、So B、But C、As D、Or
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17、 Many animals ____ in the ocean.A、lives B、live C、living D、to live
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18、 The sun ____ light and heat to the earth.A、give B、gives C、giving D、to give
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19、 We should ____ rubbish to protect the ocean.A、not throw B、not to throw C、not throwing D、not thrown
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20、 Forests ____ the "lungs" of the earth.A、are called B、is called C、called D、calling