What was devised by the team led by Richard Cohen to extremely tiny changes in heart rhyth

What did President Roosevelt have to do with the United Nations？

A．He established "The United Nations".

B．He was given the name "The United Nations".

C．He was a credit to "The United Nations".

D．He probably devised the name "The United Nations".

What did President Roosevelt have to do with the United Nations？

A．He established" The United Nations".

B．He was given the name" The United Nations".

C．He was a credit to" The United Nations".

D．He probably devised the name" The United Nations".

听力原文： The idea of public work projects as a device to prevent or control depression was designed as a means of creating job opportunities for unemployed workers mad as an effective device to aid business to revive. It was conceived during the early years of the New Deal Era 1933～1937). By 1933 ,the number of unemployed workers had reached about 13 million. This meant that about 50 million people—about one-third of the nation—were without means of support. At first, direct relief in the form. of cash or food was provided to these people. This made them receivers of government charity. In order to remove this stigma and restore to the unemployed some measure of respectability and human dignity, a plan was devised to create governmentally sponsored work projects that private industry would not or could not provide. This would also stimulate production and revive business activity.

What did the idea of public work projects help during economic depression？

A．To prevent or control depression.

B．Creating job opportunities.

C．To aid business to revive.

D．All the above.

can never prove in. No matter how many times the results of experiments agree with some theory, you can never be sure that the next time the result will not contradict the theory. On the other hand, you can disprove a theory by finding even a single observation that disagrees with the predictions of the theory. As philosopher of science Karl Popper has emphasized, a good theory is characterized by the fact that it makes a number of predictions that could in principle be disproved or falsified by observation. Each time new experiments are observed to agree with the predictions the theory survives, and our confidence in it is increased; but if ever a new observation is found to disagree, we have to abandon or modify the theory. At least that is what is supposed to happen, but you can always question the competence of the per son who carried out the observation.

In practice, what often happens is that a new theory is devised that is really an extension of the previous theory. For example, very accurate observations of the planet Mercury revealed a small difference between its motion and the predictions of Newton's theory of gravity. Einstein' s general theory of relativity predicted a slightly different motion from Newton's theory. The fact that Einstein's predictions matched what was seen, while New ton's did not, was one of the crucial confirmations of the new theory. However, we still use Newton's theory for all practical purposes because the difference between its predictions and those of general relativity is very small in the situations that we normally deal with. (New ton's theory also has the great advantage that it is much simpler to work with than Einstein' s!)

A good title for this passage is ______.

A．The History of Physical Science

B．Karl Popper's Physical Theory

C．The Philosophy of Science

D．Einstein's Theory of Science

Passage Two

Questions 62 to 66 are based on the following passage.

Scientists have devised a way to determine roughly where a person has lived using a strand(缕) of hair , a technique that could help track the movements of criminal suspects or unidentified murder victims .

The method relies on measuring how chemical variations in drinking water show up in people’s hair.

“You’re what you eat and drink, and that’s recorded in you hair,” said Thure Cerling, a geologist at the University of Utah.

While U.S diet is relatively identical, water supplies vary. The differences result from weather patterns. The chemical composition of rainfall changes slightly as raid clouds move.

Most hydrogen and oxygen atoms in water are stable , but traces of both elements are also present as heavier isotopes (同位素) . The heaviest raid falls first .As a result, storms that form. over the Pacific deliver heavier water to California than to Utah.

Similar patterns exist throughout the U.S. By measuring the proportion of heavier hydrogen and oxygen isotopes along a strand of hair, scientists can construct a geographic timeline. Each inch of hair corresponds to about two months.

Cerling’s team collected tap water samples from 600 cities and constructed a mop of the regional differences. They checked the accuracy of the map by testing 200 hair samples collected from 65 barber shops.

They were able to accurately place the hair samples in broad regions roughly corresponding to the movement of raid systems.

“It’s not good for pinpointing (精确定位),” Cerling said . “It’s good for eliminating many possibilities.”

Todd Park, a local detective, said the method has helped him learn more about an unidentified woman whose skeleton was found near Great Salt Lake.

The woman was 5 feet tall. Police recovered 26 bones, a T-shirt and several strands of hair.

When Park heard about the research, he gave the hair samples to the researchers. Chemical testing showed that over the two years before her death, she moved about every two months.

She stayed in the Northwest, although the test could not be more specific than somewhere between eastern Oregon and western Wyoming.

“It’s still a substantial area,” Park said “But it narrows it way down for me.”

62. What is the scientists’ new discovery？

A) One’s hair growth has to do with the amount of water they drink.

B) A person’s hair may reveal where they have lived.

C) Hair analysis accurately identifies criminal suspects.

D) The chemical composition of hair varies from person to person.

A.devised

B.recognized

C.scrutinized

D.visualized

A health expert devised a new method to check our health conditions.

A．taught

B．found

C．learned

D．invented

He devised an______to measure light waves.

A．implement

B．instrument

C．appliance

D．equipment

exception. Absenteeism and late arrival had been issues there for a long time, so management decided to study the problem. During the months of January through June of this year, employee absentee rates and arrival times were monitored. It was discovered that the average employee was showing up for work fifteen minutes late three times a week. In addition, the study showed that the majority of employees were missing a minimum of one day of work per month. Aside from the direct effects this situation was having on productivity, it was also creating a noticeable impact on employee morale. Management knew that this was a serious problem and that something had to be done right away.

Human Resources suggested that management undertake an incentive program. A plan was devised whereby every employee who arrived at work on time every day during the month of August would be eligible for a cash award. Within five days of the announcement, the number of late arrivals had declined to the lowest level the company had ever experienced. The company decided to extend the program so that employees who didn't miss any days of work for the rest of the year (exclusive of approved vacations) would also be eligible for a cash award. As a result, absenteeism declined dramatically. Stummering plans to continue the program into next year and is looking into making it permanent company policy. This successful program could easily be replicated at other companies. It worked for Stummering. It could work for you.

What was the problem at the Stummering Corporation？

A．Management

B．Absenteeism

C．Low pay

D．Unprofessional atmosphere

A.A.seriously

B.B.cleverly

C.C.attentively

D.D.carefully