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问题 选择题

如图是人体体温调节的曲线图，请据图分析，下列说法错误的是

[     ]

A．人体热量的来源主要是细胞中有机物的氧化放能

B．时间t1～t2，散热量增加产热量也增加

C．时间t2～t3，散热量减少是体温调节的结果

D．时间t3以后，产热量小于散热量

答案

答案：D

单项选择题

请根据下面短文回答下列题：
Safety Rules for Bike-Riding.
1. Never ride out into a street without stopping first.
2. Watch for stop signs.
3. Look behind before turning or changing lanes (车道) .
4. Always ride on the right.
5. Never follow another rider without applying the rules.
Remember, your bicycle is a small compared with cars and trucks. It is not easily seen on crowded streets and will seldom attract attention on its own. At all times, do everything you can to make sure you are noticed.

What should a bike-rider do when he / she rides after another rider
[A] Watches for stop signs.
[B] Changes lanes.
[C] Applies the safety rules.
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单项选择题

在各种玩具马的马背上放上钱，寓意“马上有钱”，放上一只茄子，称为“马上有一切”……2014年农历马年来临，随着众多版本的“马上体”走红网络，与马有关的吉祥物开始热销，这给玩具产业的发展带来了契机。这说明（）

①消费心理影响人们的消费行为

②从众心理引发的消费可以推动新产品的出现

③生产决定消费的质量和水平

④一个新的消费热点的出现能带动生产的发展

A.①②

B.①④

C.②③

D.③④
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