题目内容
（请给出正确答案）
A．the introduction of new technologies.
B．the improvement of workers' basic skills.
C．the composition of professional and managerial employees.
D．the attachment of importance to the bottom half of the employees.
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A、anterior border of sternocleidomastoid muscle
B、superior mediastinum
C、midline close to the hyoid bone
D、base of the tongue
Save Energy at Home
On the average, Americans waste as much energy as two-thirds of the world&39;s population consumes. That&39;s largely the __________ .(51) of driving inefficient cars, using inefficient appliances (设备), and living and working in poorly insulated (隔热)buildings. Then what can you do to __________ (52) the situation？
Buy energy-efficient products--buy new appliances or electronics of the highest energy-efficiency rating. New energy-efficient models may cost more initially, but have a lower operating __________ (53)over their lifetimes. The most energy-efficient models __________ (54) the Energy Star label, which identifies products __________ (55) use 20-40 percent less energy than standard new products.
According to the EPA (美国环境保护署), the typical American household can save about $400 per year in __________ (56) bills with products that carry the Energy Star.
Switch to compact fluorescent bulbs (荧光灯) --change the three bulbs you use __________ .(57)in your house to compact fluorescents. Each compact fluorescent bulb will keep half a ton of CO2 out of the air __________ (58) its lifetime. __________ .(59), compact fluorescent bulbs last ten times as long and can save $30 per year in electricity costs.
Set heating and cooling temperatures correctly--check thermostats (温度自动调节器) in your home to make sure they are __________ (60) at a level that doesn&39;t waste energy. Turn off lights and other electrical appliances such as televisions and radios when you&39;re not __________ .(61) them. Install automatic timers for lights that people in your house frequently __________(62) to turn them off when leaving a room. Let the sun shine in--the cheapest and most energy-efficient light and heat source is often fight outside your window. On __________ (63) days, open blinds (百叶窗) to let the sun light your home for free. Also remember that .(64) entering a room equals passive solar heating.
Even on cold winter days, sun streaming into a room can raise the temperature by several __________ (56).
__________ 查看材料
A.power
B.result
C.way
D.work
A、105.5 cycles
B、110.5 cycles
C、24.5 cycles
D、None of the above.
A、Practice makes perfect.
B、Focus on what you think the audience may be thinking about you.
C、Use your creative visualization to psyche yourself up.
D、Do a lot of preparation.
A、Fear of the audience.指的是由观众给演讲者带来的心理压力，通常与观众的人数成正比
B、Fear of performing poorly.指的是担心自己的现场表现不好
C、Fear of embarrassment.指的是怕自己的讲稿内容不够好
D、Fear your material is not good enough.指的是担心现场设备不够好，比如麦克风和音响的质量。
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