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【单选题】
Eta Carinae is hard to observe becauseA.
it is too far away.
B.
there is too much dust and gas around it.
C.
the binoculars are not powerful enough.
D.
it does not send out infrared light.
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【单选题】以下关于Web 浏览器特点的描述中错误的是？
A.
Web 浏览器由一组客户与解释单元，以及一个控制器组成
B.
控制器解释鼠标点击与键盘输入，并调用其他组件来执行用户指定的操作
C.
控制器解释页面，并将解释后的结果显示在用户屏幕上
D.
控制器接受用户输入的URL或点击超级链接
【单选题】The meaning of "terms of trade" is
A.
the price of a country's exports divided by the price of its imports.
B.
the amount of exports sold by a country.
C.
the price conditions bargained for in international markets.
D.
the quantities of imports received in free trade.
E.
the tariffs in place between two trading countries.
【单选题】The meaning of "terms of trade" is
A.
the tariffs in place between two trading countries.
B.
the price of a country's exports divided by the price of its imports.
C.
the amount of exports sold by a country.
D.
the quantities of imports received in free trade.
E.
the price conditions bargained for in international markets.
【单选题】以下关于Web浏览器特点的描述中错误的是
A.
Web浏览器由一组客户与解释单元，以及一个控制器组成
B.
控制器解释鼠标点击与键盘输入，并调用其他组件来执行用户指定的操作
C.
控制器解释页面，并将解释后的结果显示在用户屏幕上
D.
控制器接收用户输入的URL或点击超级链接
【单选题】Which of the following is not the meaning of president?
A.
经理
B.
主席
C.
院长
D.
总统
E.
董事长
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