【判断题】【消耗次数：1】
只有在不存在闲置资源情况下，机会成本才有意义。
①
正确
②
错误
参考答案：
复制
纠错
相关题目
【单选题】
机会成本是指（）。
①
在选择一个行动方案时，因放弃了另一个最佳替代方案而做出的牺牲。
②
有可能发生的成本。
③
在选择一个行动方案时，被放弃的另一个方案的成本。
④
从销售收入中扣除正常利润之后得出的成本。
【多选题】
土地影子价格由土地机会成本和新增资源消耗两部分构成，下列费用中，具有土地机会成本性质的有()。
①
土地平整费
②
土地补偿费
③
青苗补偿费
④
征地动迁费
⑤
安置补助费
【单选题】
丧失现金折扣的机会成本的大小与（ ）。
①
折扣百分比的大小呈反向变化
②
信用期的长短呈同向变化
③
折扣百分比的大小、信用期的长短均呈同向变化
④
折扣期的长短呈同向变化
随机题目
【多选题】
The river_____________ the two towns.
①
finds a way
②
keeps apart
③
separates
④
leads to
【多选题】
She expressed her opinions_____________ change their ideas.
①
so that
②
so as to
③
in order to
④
in order that
【多选题】
All the students in our school ____________ in the hall to hear a lecture.
①
collected
②
gathered
③
assembled
④
doubled
【多选题】
This story_____________ a very brave (勇敢的) young girl.
①
is to
②
is about
③
concludes
④
concerns
【单选题】
Computer are being used more and more____________ in the world today.
①
extensively
②
expensively
③
exclusively
④
exactly
【单选题】
Anger is a normal emotion that we all feel from time to time. Some people express anger openly in a calm reasonable way. Some explode with anger, and scream and shout. But other people keep their anger inside. They can not or will not express it. This is called repressing anger. Many doctors think that repressing anger is more dangerous to a person’s health than expressing it. They say that when a person is angry, the brain gives out the same hormones (荷尔蒙) as that are produced during tense and nervous situations. They speed the heart rate and raise blood pressure, so the person feels excited and ready to act. Repressing these feelings will only make the feelings continue, and this can lead to many medical problems. To prevent these problems, these doctors suggest letting the anger out by expressing it freely. But recently some other doctors question this. They say that people who express anger repeatedly and violently become, in fact, more but not less angry. And this could cause medical problems. However, some doctors say that both repressing and expressing anger can be dangerous. They believe that those who express anger strongly may be more likely to develop heart diseases, and that those who keep their anger inside may face a greater danger of high blood pressure. Doctors say the solution is to learn how to deal with anger. The first step is to admit that you are angry and to recognize the real cause of the anger, and then to decide if the cause is serious enough to get angry about. If it is, do not express your anger while angry. Wait until your anger has cooled down, and express yourself calmly and reasonably. Doctors also say that a good way to deal with anger is to find humor in the situation that has made you angry, for laughter is much healthier than anger.According to the passage, which of the following about hormones is correct?
①
Hormones will cause people to get anxious.
②
Hormones will increase when one gets angry.
③
The brain produces hormones when one’s blood pressure rises.
④
The brain produces hormones when one has medical problems.
【单选题】
It is no good ___________ to know what you dont know.
①
pretend
②
to pretend
③
pretending
④
pretends
【单选题】
Goats are being hired to do the work of people near San Diego. The fires that occurred in Hillborbough four years ago destroyed thirty homes, most of which have been rebuilt. While people were rebuilding the homes, the grasses and bushes were growing back. The area is now so overgrown in bushes that there is again a major danger of fire.The city government put up bids to remove the bushes. The lowest bid they received was $50,000—and that was if the city provided breakfast and lunch for the workers for the six weeks it would take to clear the overgrown area. The city only wanted to give unlimited coffee and a piece of bread a day for each person. When that offer was rejected, the city asked for help on its website.A sheepherder in Montanta and a goat-keeper in San Bernardino read about the city’s plight（困境）while surfing the Web. They both offered to do the job for $25,000. The city government chose the goat-keeper because he lived closer. When he was told that the city dump（垃圾场）was overflowing , the goat-keeper said, “No problem. My goats will eat everything in your dump, except the car engines, of course.” So, for another $5,000, the city killed two birds with one stone. If all goes well, they will invite the goat-keeper and his “family” back every three years. The goat-keeper said that he would probably visit San Diego while his goats were in the dump.What are the “two birds” that the city government kills with only one stone?
①
Both the sheepherder and goat-keeper will work for the city for $25,000.
②
The danger of fire and providing breakfast and lunch for the work crews.
③
The danger of fire and the overflowing dump.
④
The city government can save some money and the goat-keeper has a new job.