2010年2月16日,花样滑冰运动员申雪、赵宏博为中国队获得了第21届冬奥会的第

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问题:

2010年2月16日,花样滑冰运动员申雪、赵宏博为中国队获得了第21届冬奥会的第1枚金牌。如图所示,是他们在比赛中的一个情景。对于此情景,下列说法正确的是

[ ]

A.以赵宏博为参照物,申雪是静止的

B.赵宏博对申雪的支持力大于申雪受到的重力

C.申雪对赵宏博的压力与赵宏博对申雪的支持力是一对平衡力

D.赵宏博受到的重力和冰面对他的支持力是一对平衡力

考点:平衡力与平衡状态运动和静止的相对性
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某地高温,干燥,少雨,下列哪种植物能在该地生活( )

A.毛竹
B.柳树
C.仙人掌
D.葫芦藓

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杜邦财务分析体系涉及的所有财务比率中,最具有综合性和代表性的财务比率是( )。

A.资产净利率

B.权益乘数

C.资产周转率

D.权益净利率

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阅读理解

     __1__ The goal here is to limit carbon dioxide and other greenhouse gases, which are closely

associated to the big problem of global warming.

     Strategy 1: Bring your own cup to Starbucks

     You'll get a 10 cent discount, and it's one less paper cup to end up in a landfill. While you're there, pick

up some free bags of spent coffee grounds to use as "green" fertilizer in your garden.    

     The payoff:  2   

     Strategy 2: Turn off your computer

     When in standby mode, your PC is still using energy.    3  

     The payoff: Turning off a monitor for 40 hours a week may only save $5 a month, but it reduces CO?

by 750 pounds.

     Strategy 3: Reuse plastic bags

     Instead of throwing away 100 billion plastic bags a year, try and get a second, third, or tenth use out of

them. Better yet, next time you shop, try a reusable bag.

The payoff:   4   The amount of oil it would take to make just 14 plastic bags would run your car for one

mile.

     Strategy 4: Use recycled paper in the bathroom

     Most of the toilet paper we use is made from trees found in forests previously untouched by humans.

     The payoff: If every household replaced one roll of toilet paper with a recycled one, 424000 trees

would still be standing. Look for eco paper towels too.

     Strategy 5: Buy energy-efficient appliances(电器)

     Replace the old fridge with an Energy Star appliance and you'll use 15 percent less energy.   5  .

     The payoff: If we all used one Energy Star appliance at home, it would be like planting 1.7 million acres of new trees.

A.You can be proud of yourselves, even if you can only make one or two of these green changes.

B. Adding green to your garden is beautiful and earth-pleasing.

C. It might be a little expensive to buy, but you'll save money on your electricity bills and help the

    environment.

D. In fact, 75 percent of electricity used in your home comes from electronics that are not turned off.

E. You're reducing pollution.

F. The store won't create more waste when they throw away a cup.

G. Just one tree will help make cleaner air and save the environmrnt from 5000 pounds of hot carbon

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反映人群健康状况最重要、最敏感的指标是()

A.粗死亡率

B.婴儿死亡率

C.平均期望寿命

D.两周患病率

E.5岁以下儿童死亡率

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