单选题：What is this passage about?

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题目类型：单选题
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What is this passage about? A．It is about the American National Parks.
B．It is about the National Park Service.
C．It is about the National Park Service partnerships.
D．It is about the care and preservation of the National Parks in America.

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As modern life becomes more complex， people have to put up m

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The dentist has decided to extract her bad tooth.

The dentist has decided to extract her bad tooth.A．take out B．break off C．push i

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About one million Americans are diagnosed annually with skin

About one million Americans are diagnosed annually with skin cancer.A．every year

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The frictionless maglev train enables you _____.

The frictionless maglev train enables you _____.A．to develop a maglev train rail

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企业投资项目申请政府投资补助、贷款贴息或政府外债资金，地方政府申请上级政府投资补助的资金，政府主管部门接到资金申请报告后

企业投资项目申请政府投资补助、贷款贴息或政府外债资金，地方政府申请上级政府投资补助的资金，政府主管部门接到资金申请报告后，委托工程咨询机构进行咨询评估的是（

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