Identify the errors in the following sentence:I got two vases in China. All of them are expensive. （)

A.striked

B.that they had

C.really learned

D.a great deal

A.Judging by

B.is coming

C.think

D.must have

回答 64～65 题：

英汉对照术语

第 64 题 ME(MediCation Errors)（）。

A.视图管理

B.故障管理

C.记账管理

D.安全管理

（）

A．任何事件

B．一些事件

C．可预防事件

D．任何可预防事件

E．某些可预防事件

A.when

B.whether

C.what

D.how

ible errors in Inventory Management.You would like to inventory the stock several times each time using only a sample but cover all stock units at least one every year.Which of the following methods can be used？ Please choose the correct answer.()

A.Cycle Counting Method

B.Live method

C.Sampling method

D.Difference Posting procedure

一家竞争性厂商的短期成本函数如下:C（q)=q³-8q³+30q+5（1)求出MC、AC和AVC,并在图形

一家竞争性厂商的短期成本函数如下:

C(q)=q³-8q³+30q+5

(1)求出MC、AC和AVC,并在图形上表示出来。

(2)当价格位于哪一区间时厂商产量为零？

(3)在图上标出厂商的供给曲线。

(4)当价格为多少时企业产量为6？

A competitive firm has the fallowing short - run cost function: C(q)=q³-8q²+30q+5.

a. Find MC, AC, and AVC and sketch them on a graph.

b. Al what range of prices will the firm supply zero output？

e. Identify the firm's supply curve on your graph.

d. At what price would the firm supply exactly 6 units of output？

For thousands of years, people have known that the best way to understand a concept is to explain it to someone else. "While we teach, we learn," said Roman philosopher Seneca. Now scientists are bringing this ancient wisdom up-to-date. They're documenting why teaching is such a fruitful way to learn, and designing innovative ways for young people to engage in instruction. Researchers have found that students who sign up to tutor others work harder to understand the material, recall it more accurately and apply it more effectively. Student teachers score higher on tests than pupils who're learning only for their own sake. But how can children, still learning themselves, teach others？ One answer: They can tutor younger kids. Some studies have found that first-born children are more intelligent than their later-born siblings (兄弟姐妹). This suggests their higher IQs result from the time they spend teaching their siblings. Now educators are experimenting with ways to apply this model to academic subjects. They engage college undergraduates to teach computer science to high school students, who in turn instruct middle school students on the topic. But the most cutting-edge tool under development is the "teachable agent"—a computerized character who learns, tries, makes mistakes and asks questions just like a real-world pupil. Computer scientists have created an animated (动画的) figure called Betty's Brain, who has been "taught" about environmental science by hundreds of middle school students. Student teachers are motivated to help Betty master certain materials. While preparing to teach, they organize their knowledge and improve their own understanding. And as they explain the information to it, they identify problems in their own thinking. Feedback from the teachable agents further enhances the tutors' learning. The agents' questions compel student tutors to think and explain the materials in different ways, and watching the agent solve problems allows them to see their knowledge put into action. Above all, it's the emotions one experiences in teaching that facilitate learning. Student tutors feel upset when their teachable agents fail, but happy when these virtual pupils succeed as they derive pride and satisfaction from someone else's accomplishment. 1. What are researchers rediscovering through their studies？ A.Seneca's thinking is still applicable today. B.Better learners will become better teachers. C.Human intelligence tends to grow with age. D.Philosophical thinking improves instruction.

A、Seneca's thinking is still applicable today.

B、Better learners will become better teachers.

C、Human intelligence tends to grow with age.

D、Philosophical thinking improves instruction.