bulky coal from Taiyuan to Lianyungang.

A、stopping people to get

B、to stop people to get

C、to prevent people from getting

D、preventing people to get

已知，则f（x）在（0，π）内的正弦级数b_nsinnx的和函数S（x）在x=π／2处的值及系数b₃分别为：（）

A. S（π／2）=1／2，b₃=2／3π

B. S（π／2）=1，b₃=1／3π

C. S（π／2）=1，b₃=2／3π

D. S（π／2）=1／2，b₃=1／3π

A、Moody’s: AAA to BBB - S&P’s: Aaa to Baa

B、Moody’s: Aaa to Baa - S&P’s: AAA to BBB

C、Moody’s: AAA to A - S&P’s: Aaa to A

D、Moody’s: Aaa to A - S&P’s: AAA to A

B) scratch

C) explore

D) exploited

E) consent

F) consultant

G) bribe

H) positively

I) exchange

J) investigation

K) accounting

L) undiscovered

M) unveiled

N) shielded

O) negatively

In the past several years, many news stories about corporate greed have come to surface. The illegal practices of some executives have(1)impacted our economy. What makes this worse is that these executives seem to have the(2)of some political leaders. Some of the executives even(3)lawmakers. Recently a member of Congress from California was caught demanding gifts from interest groups in(4)for supporting new laws. A few top leaders in the government are under(5)for illegal activities. This doesn't even(6)the surface of the problem. A few years back a company made many purposeful(7)errors to fool investors. Many believe that one reason the problem became so big was that our nation's top leaders(8)the company. By the time the truth was(9), many innocent people had lost their entire savings. There seems to be more and more companies that(10)the public's trust for their own interests. This calls for laws and strict regulations to put the illegal practice to an end.

Amitai Etzioni is not surprised by the latest headings about scheming corporate crooks(骗子). As a visiting professor at the Harvard Business School in 1989 ,he ended his work there disgusted with his students' overwhelming lust for money. "They're taught that profit is all that matters," he says. "Many schools don't even offer ethics (伦理学) courses at all."

Etzioni expressed his frustration about the interests of his graduate students. "By and large. I clearly had not found a way to help classes full of MBAS see that there is more to life than money, power, fame and self-interest," he wrote at the time. Today he still takes the blame for not educating these "business-leaders-to-he". "I really feel like I failed them, "he says. "If I was a better teacher maybe I could have reached them."

Etzioni was a respected ethics expert when he arrived at Harvard. He hoped his work at the university would give him insight into how questions of morality could he applied to places where serf-interest flourished. What he found wash't encouraging. Those would-be executives had, says Etzioni, little interest in concepts of ethics and morality in the boardroom--and their professor was met with blank stares when he urged his students to see business in new and different ways.

Etzioni sees the experience at Harvard as an eye-opening one and says there's much about business schools that he'd like to change. "A lot of the faculty teaching business tire bad news themselves. "Etzioni says. From offering classes that teach students how to legally manipulate contracts, to reinforcing the notion of profit over community interests, Etzioni has seen a lot that's left him shaking his head. And because of what he's seen taught in business schools, he's not surprised by the latest rash of corporate scandals. "In many ways things have got a lot worse at business schools. I suspect. "says Etzioni.

Etzioni is still teaching the sociology of right and wrong and still calling for ethical business leadership. "People with poor motives will always exist," he says. "Sometimes environments constrain those people and sometimes environments give those people opportunity. "Etzioni says the booming economy of the last decade enabled those individuals with poor motives to get rich before getting in trouble. His hope now: that the cries for reform. will provide more fertile soil for his longstanding messages about business ethics.

What impressed Amitai Etzioni most about Harvard MBA students?

A．Their keen interest in business courses.

B．Their intense desire for money.

C．Their tactics for making profits.

D．Their potential to become business leaders.

A、Siebzig Cent

B、Eins Euro elf

C、Eins dreißig

D、Zwei Euro

设f(x,y,z)=0,z=g(x,y),试求