相关试卷
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1、 阅读短文，回答问题
Seasons and Ecosystems
Seasons bring changes to ecosystems. In spring, warmer temperatures trigger plant growth and animal reproduction. Birds return from migration, and flowers bloom. This seasonal cycle is crucial for food chains.
Summer brings long days and abundant sunlight. Plants grow rapidly, providing food for herbivores. Animals like deer and rabbits raise their young during this season. However, extreme heat can stress some species.
Autumn brings cooler temperatures and falling leaves. Many animals prepare for winter by storing food or migrating. Deciduous trees lose their leaves to conserve water. This season is also a time for harvests in agricultural ecosystems.
Winter is a challenging time for many species. Some hibernate, while others adapt to scarce food. Snow cover provides insulation for plants and animals. However, climate change is altering seasonal patterns, affecting ecosystem balance.
(1)、What do birds do in spring?A、Hibernate. B、Migrate south. C、Return from migration. D、Store food.(2)、Why do deciduous trees lose leaves in autumn?A、To grow faster. B、To conserve water. C、To attract animals. D、To prepare for blooming.(3)、How do animals adapt to winter?A、By migrating or hibernating. B、By eating more. C、By reproducing. D、By moving to warmer areas.(4)、What is threatening seasonal patterns?A、Pollution. B、Climate change. C、Deforestation. D、Overhunting.(5)、What's the main idea of the passage?A、The beauty of seasons. B、Seasonal changes and ecosystem responses. C、Animal migration patterns. D、The impact of winter on ecosystems. -
2、 语法段落填空
Last summer, a typhoon (hit) our city. It (rain) heavily and winds (blow) strongly. Many trees (fall) down, and some buildings (damage).
Rescue teams (dispatch) immediately. They (help) people in danger and (clear) blocked roads. By evening, the typhoon (pass), but the city (need) weeks to recover.
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3、 Building （规范）specify earthquake resistance standards.
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4、 The （碳循环）regulates global climate.
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5、 First aid training teaches how to treat （伤口）.
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6、 The （湿地）help prevent floods and purify water.
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7、 Scientists study seismic waves to p earthquakes.
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8、 The h destroyed crops and caused food shortages.
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9、 In spring, birds return with the a of warm weather.
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10、 The Great Barrier Reef is a vital coral r.
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11、 Emergency plans include procedures for e in case of fire.
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12、 The i of climate change is evident in extreme weather.
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13、 So severe ____ the hurricane that the city declared a state of emergency.A、was B、were C、had been D、have been
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14、 ____ in the shelter, families received food and water.A、Staying B、Stay C、To stay D、Stayed
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15、 The students ____ a lesson when the fire alarm rang.A、have B、had C、are having D、were having
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16、 If the dam ____, the town would be flooded.A、bursts B、burst C、had burst D、would burst
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17、 Not until the floodwaters ____ did rescue teams enter.A、recede B、receded C、have receded D、had receded
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18、 The conference on climate change ____ last month was successful.A、holding B、held C、to hold D、having held
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19、 ____ by the storm, the city suffered power outages.A、Hit B、Hitting C、To hit D、Having hit
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20、 It is essential that buildings ____ to withstand earthquakes.A、design B、are designed C、be designed D、designed