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Nowhere else in the world＿＿＿more attractive scenery than in Switzerland．
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【单选题】The need for solar electricity is clear. It is safe, ecologically sound, efficient, continuously available, and is has no moving parts. The basic problem with the use of solar photovoltaic devices is ...
A.
discussing the importance of solar energy
B.
explaining the functioning of solar cells
C.
presenting a history of research on energy sources
D.
describing a possible solution to the problem of the cost of photovoltaic cells
【简答题】Electricity, like clean water, is a resource that’s often taken for granted. But last summer, when blackouts struck much of the northeastern US, Ontario and Rome, consumers on two continents were give...
【简答题】1 New technology often creates unanticipated problems. 2 A utomobiles, for example, provide numerous benefits, but they also pollute the air and kill about fifty thousand Americans each year. 3 It is ...
【单选题】Most of us take electricity for ____ . But do you know that about 1.5 billion people in this world have no access to electrical power?
A.
grant
B.
granting
C.
to grant
D.
granted
【单选题】长尾理论是网络时代兴起的一种新理论，由美国人克里斯安德森提出。长尾理论认为，由于成本和效率的因素，过去人们只能关注重要的人或重要的事，如果用正态分布曲线来描绘这些人或事，人们只能关注曲线的“头部”，而将处于曲线“尾部”、需要更多的精力和成本才能关注到的大多数人或事忽略。以下情况采用长尾理论观点重视“尾部”的是( )。
A.
尽管现在“大热门”的经济力量已经不如当年，但我们仍然对其绝对的重点关注
B.
商家认为听众对非热门音乐有着无限的需求，市场无比巨大，应加以关注
C.
厂商们把精力放在那些有80％客户去购买的20％的主流商品上，着力维护购买其80％商品的20％的主流客户
D.
在销售产品时，厂商关注的是少数几个“VIP”客户，“无暇”顾及在人数上居于大多数的普通消费者
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