单项选择题

听力原文:W: Hi, Paul, are you ready for your Speech Club presentation this evening?
M: Yeah, I'm going to discuss robots.
W: Robots? You mean those machines that walk and talk like in the movies?
M: No, industrial robots like those used in the automobile and electronic industries.
W: I saw an article about that kind of robots the other day. There were pictures of robots welding cars, but
they certainly didn't look the way I thought robots should look.
M: The robots we usually imagine are made up in science fiction. In industry, robots are designed to do a specific set of operations, such as welding car frames. They are rarely built to resemble humans.
W: Actually, all they need is a kind of brain to give signals, and a mechanism, such as an arm, to carry out instructions, right?
M: Right. Tiny computers become the brain of these robots. The computer sends signals, in the form. of electronic impulses, to move an arm and a claw. The claw is the hand that does particular kinds of work.
W: OK. But we've had machines on assembly lines doing work for people for years. That's what started the industrial revolution, remember?
M: But each of those machines can only perform. a single operation and it takes months to modify them. The new industrial robots can each do a number of tasks. And it's easy to reprogram them to perform. totally different operations. That's one reason why they're becoming so popular.
What kind of robots does the man refer to?
A.Agricultural robots.
B.Industrial robots.
C.Computers.
D.Electrical robots.

A.W:
B.
W:
C.
M:
D.
W:
E.
W:
F.
What
G.Agricultural
H.
B.Industrial
I.
C.Computers.
D.Electrical
J.
热门 试题

单项选择题
听力原文: The main policy-making bodies of the EU are the Commission, the Council of Ministers, and the European Parliament. The Commission has 17 members appointed by EU countries for four-year terms. It is an executive body with the fight of proposing initiatives to the Council of Ministers. This Council is made up of the foreign ministers from the member nations. Although the Commission represents community interests, the Council represents the national interests of the members. Members of the Council rotate the presidency with each holding the office for sixmonth terms.The European Parliament had 626 members in 1995. The representatives are elected by citizens of member nations. The number of representatives differs according to the size of each country. Germany, for example, has 99 representatives, while Luxembourg has six. When the Parliament meets, the representatives sit in political groups, not by nation. Some of the political groups are:the Socialists, the European People's party(or Christian Democrats),the Liberal Democratic and Reform. Group, the European Democrats, and the Greens( an environmental group).Other EU institutions are the Court of Justice, the Court of Auditors, the Economic and Social Committee, and the European Investment Bank. The Court of Justice, founded in 1958,reviews the legality of acts of the Commission and Council. The Court of Auditors, founded in 1977 , monitors the revenues and expenditures of the EU. Since 1.958 the Economic and Social Committee has revised the Commission and the Council on general economic policy The Committee has 189 members representing employers, labor unions, farmers, professions, consumers, and small businesses. The European Investment Bank, founded in 1958,is an independent public institution that oversees longterm investment.Whose interests does the Council of Ministers represent?A.The community interests.B.The interests of the foreign ministers from the member nations.C.The interests of the Council members.D.The national interests of the members.
A.B.
C.958
D.
Whose
E.The
F.
B.The
G.
C.The
H.
D.The
I.
单项选择题
U.S. No Longer Tallest Country in the WorldAmerica used to be the tallest country in the worlD.From the days of the founding fathers right on through the industrial revolution and two world wars, Americans literally towered over other nations. In a land of boundless open spaces and limitless natural abundance, the young nation transformed its increasing wealth into human growth. However, just as it has in so many other arenas, America's predominance in height has fadeD.Americans reached a height plateau after World War II, gradually falling behind the rest of the world as it continued growing taller.By the time the baby boomers reached adulthood in the 1960s, most northern and western European countries had caught up with and surpassed the United States. Young adults in Japan and other prosperous Asian countries now stand nearly as tall as Americans do. Even residents of the formerly communist East Germany are taller than Americans today. In Holland, the tallest country in the world, the typical man now measures 6 feet, a good two inches more than his average American counterpart. Compare that to 1850, when the situation was reverseD.Not just the Dutch, but all the nations of western Europe, stood 2 1 2 inches (6.25 em) shorter than their American brethren.Does it really matter? Does being taller give the Dutch any advantage over say, the Chinese (men 5 feet, 4.9 inches; women 5 feet, 0.8 inches) or the Brazilians (men 5 feet, 6.5 inches; women 5 feet, 3 inches)? Many economists would argue that it does matter, because height is correlated with numerous measures of a population's well being. Tall people are healthier, wealthier and live longer than short peoplE.Some researchers have even suggested that tall people are more intelligent. It's not that being tall actually makes you smarter, richer or healthier. It's that the same things that make you tall—a nutritious diet, good prenatal care and a healthy childhood—also benefit you in those other ways.That makes height a good indicator for economists who are interested in measuring how well a nation provides for its citizens during their prime growing years. With one simple, easily collected statistic, economists can essentially measure how well a society prepares its children for lifE.This is the part of the society that usually eludes economists, because economists are usually thinking about incomE.This is the part of the society that doesn't earn an incomE.Height tells you about a segment of the population that is invisible to traditional economic statistics. Children don't have jobs or own houses. They don't buy durable goods, or invest in the stock market. Obviously, investments in their well being are critical to a nation's economic futurE.For several years now, researchers have been trying to figure out exactly why the United States fell behinD.How could the wealthiest country in the world, during the most robust economic expansion in its history, simply stop growing? Maybe we've reached the point where we're going to go backwards in height. Like many human waits, an individual's height is determined by a mix of genes and environment. Some experts put the contribution of genes at 40%, some at 70%, some even higher. However, they all agree that aside from African pygmies and a few similar exceptions, most populations have about the same genetic potential for height. That leaves environment to determine the differences in height between populations around the world, specifically the environment children experience from the moment of conception through adolescencE.Any deficiency along the way, from poor prenatal care to early childhood disease or malnutrition, can prevent a person from reaching his or her full genetic height potential. We know environment can affect heights by three to five inches (7.5 to 12.5 cm). The earliest stages of life are the most important to the human growth machine; at age 2 there isA.shorter thanB.about the same height asC.taller than
A.S.
B.
C.25
D.
E.9
F.8
G.5
H.
I.
J.5
K.5
L.shorter
M.about
N.taller