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第一部分 听对话回答问题
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（
B.
（
B.
（
B.
（
B.
（
A. The “heart” of the earth.
B. The “kidneys” of the earth.
C. The “lungs” of the earth.
（
A. It covers about 6% of the earth's land area.
B. It covers about a third of the earth's land area.
C. It covers about three fourths of the earth's land area.
（
A. During drought(干旱). B. During summer. C. During heavy rains.
（
A. To Zhalong. B. To Yancheng. C. To Hainan.
（
A. Oceans, wetlands and forests.
B. Plants and animals.
C. All the living and non-living things in an area.
（
A. Thousands of plants and animals.
B. Millions of plants and animals.
C. Billions of plants and animals.
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（
C
）1. Where is the girl going for further study?B.
（
B
）2. Which animal is Kitty talking about?B.
（
A
）3. What kind of ecosystem is mentioned?B.
（
B
）4. What's Sandy doing?B.
（
C
）5. What do people call the forests?A. The “heart” of the earth.
B. The “kidneys” of the earth.
C. The “lungs” of the earth.
（
A
）6. How big is this ecosystem?A. It covers about 6% of the earth's land area.
B. It covers about a third of the earth's land area.
C. It covers about three fourths of the earth's land area.
（
C
）7. When do wetlands store water?A. During drought(干旱). B. During summer. C. During heavy rains.
（
C
）8. Where is the boy going?A. To Zhalong. B. To Yancheng. C. To Hainan.
（
C
）9. What does the ecosystem include?A. Oceans, wetlands and forests.
B. Plants and animals.
C. All the living and non-living things in an area.
（
B
）10. How many plants and animals does one of the ecosystems support?A. Thousands of plants and animals.
B. Millions of plants and animals.
C. Billions of plants and animals.
答案
1.C 2.B 3.A 4.B 5.C 6.A 7.C 8.C 9.C 10.B
