无谓损失就是消费者剩余的减少部分。_爱下问搜题

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问题判断题

无谓损失就是消费者剩余的减少部分。

答案

参考答案：错

解析：无谓损失是指生产者与消费者都没有得到的部分，不仅包括消费者剩余的减少，而且还包括生产者剩余的减少，因此是错误的。

阅读理解

任务型阅读。维生素对人体很重要，大家了解他们吗？请仔细阅读第56-60题中的五种维生素的介绍和A至F材料说明，找出需要补充的维生素的每个人。

	小题1:Vitamin A What can high-vitamin A foods do for you? be great for night vision help you see in color help your grow properly and aids in healthy skin ﹡ vitamin A in carrots helps you see at night
	小题2:The B vitamins What can the B vitamin do for you? help make energy and set it free help make red blood cells which carry oxygen(氧气) throughout your body ﹡ The B vitamins in leafy green vegetables help your body make protein(蛋白质)and energy.
	小题3:Vitamin C What can vitamin C do for you? keep body tissues(组织) in good shape help you heal when you get hurt help your body resist infection ﹡ Vitamin C in oranges helps your body heal if you get a cut
	小题4:Vitamin D What can vitamin D do for you? help keep your bones strong and healthy help keep your teeth strong and healthy help your body absorb the amount of calcium(钙) ﹡ Vitamin D in milk helps your bones and teeth.
	小题5:Vitamin E What can vitamin E do for you? protect your skin from ultraviolet(紫外线) light protect you lungs from becoming damaged by polluted air help make red blood cells ﹡ Sunflowers seeds are the richest in Vitamin E

A．Emily often feels tired and seems to be lack of energy.

B．Jeff spent his summer vacation on the beach and got serious sunburnt.

C．Kate has poor eyesight and she can’t see clearly at night.

D．Tony sometimes feels pains in his bones and he has loose teeth.

E. Luke is so careless that he often gets hurt. And it takes a long time for his wound to heal.
F. Linda feels nervous before the new people.

多项选择题

科学决策包含的主要内容有（）。

A．严格实行科学的决策程序

B．依靠专家运用科学的决策技术

C．依靠已有的经验实施决策

D．建立一个结构合理的决策机构

E．领导者用科学的方法决断