Ten years have passed _______ I began to learn English.

A.has lived

B.will have lived

C.has been lived

D.will be lived

A.after

B.since

C.for

D.that

A.commenced

B.commended

C.commented

D.commanded

A.went

B.has gone

C.go

D.will go

A.simple sentence

B.compound sentence

C.complex sentence

D.compound-complex sentence

A、now and then

B、off and on

C、for and cons

D、up and down

icine on human patients.

A) since

B) before

C) after

D) when

genizing people. This is "the democratizing uniformity of dress and discourse, and the casualness and absence of consumption" launched by the 19th century department stores that offered vast arrays of goods in an elegant atmosphere. Instead of intimate shops catering to a knowledgeable elite, "these were stores, anyone could enter, regardless of class or background. This turned shopping into a public and democratic act. The mass media, advertising and sports are other forces for homogenization.

Immigrants are quickly fitting into this common culture, which may not be altogether elevating but is hardly poisonous. Writing for the National Immigration Forum, Gregory Rodriguez reports that today's immigration is neither at unprecedented level nor resistant to assimilation. In 1998 immigrants were 9.8 percent of population; in 1900, 13.6 percent. In the 10 years prior to 1990, 3.1 hnmigrants arrived for every 1,000 residents; in the 10 years prior to 1890, 9.2 for every 1,000. Now, consider three indices of assimilation—language, home ownership and intermarriage.

The 1990 Census revealed that a majority of immigrants from each of the fifteen most common countries of origin spoke English "well" or "very well" after ten years of residence. The children of immigrants tend to be bilingual and proficient in English. "By the third generation, the original language is lost in the majority of immigrant families". Hence the description of America as a graveyard "for language". By 1996 foreign-born immigrants who had arrive before 1970 had a home ownership rate of 75.6 percent, higher than the 69.8 percent rate among native-born Americans.

Foreign-born Asians and Hispanics "have higher rates of intermarriage than do U.S. born whites and blacks". By the third generation, one third of Hispanic women are married to non-Hispanics, and 41 percent of Asian-American women are married to non-Asians.

Rodriguez not that children in remote villages around world are fans of superstars like Arnold Schwarzenegger and Garth Brooks, yet "some Americans fear that immigrant living within the United States remain somehow immune to the nation's assimilative power".

Are there divisive issues and pockets of seething in America？ Indeed. It is big enough to have a bit of everything. But particularly when viewed against America's turbulent past, today's social induces suggest a dark and deteriorating social environment.

The word "homogenizing"(Line 1, Paragraph 1) most probably means______.

A．identifying

B．associating

C．assimilating

D．monopolizing

uced by conventional agriculture will disappear, but simply that food-buying patterns will polarize: there will be a niche market for conventional foodstuffs just as there is for organic food.It may even be that GM food will become the food of preference because consumers come to appreciate the health benefits of reduced pesticide use.

Currently there are some 20,000 chemicals in use, but the scientists only have detailed information around 1,000 of them.To see the advantages of GM food you have only to consider the recent press revelation that the average lettuce receives eleven pesticide applications before it reaches the supermarket shelf.I’m sure chemicals and their role in disease will become a big issue in the 21st century as the population of the developed world worries increasingly about its health.

The reason GM food will not go away is that we need a three-fold increase in food production by the year 2050 to keep pace with the world’s predicted population growth to ten or eleven billion.It’s not just a question of more mouths to feed either.What is often forgotten is that all these extra people will take up space, reducing the overall land available for agriculture.

The world has 800 million hungry people.Until now, food supplies have been increased by improved varieties, pesticides and artificial fertilizers: the green revolution.Now we’re on the edge of a new one: a genetic revolution.

It may well be that in the long term it is the developing world that benefits most from GM food.It is true that for the next years or so GM crops may be too expensive.

6. According to the passage, food supplies have been increased by all the following except_____________.

A.pesticides

B.artificial fertilizers

C.improved varieties

D.transportation

7.How many chemicals are still less familiar to the scientists？()

A.20,000.

B.1,000

C.19,000

D.21,000.

8.Why will people prefer GM food in the future？()

A.Because it uses less pesticides.

B.Because it is much cheaper.

C.Because the production is increased.

D.Because it is organic food.

9.Which of the following is NOT true？()

A.By 2050, the world population will grow to ten or eleven billion.

B.In the 21st century, GM food will take the place of conventional food.

C.More and more people will reduce the overall land available for farming.

D.More and more people will consume more food and occupy more space.

10.The author’s attitude towards GM food is _______.

A.negative

B.positive

C.critical

D.uncertain

s, people never seem to become much better off! Prices are rising continuously.This condition is termed one of inflation(通货膨胀); the money supply is becoming inflated so that each unit of it becomes less valuable.People have grown accustomed in recent years to higher and higher rates of inflation.What could be bought ten years ago for one dollar now costs well over two dollars.Present indications are that this rate of inflation is tending to rise rather than to fall.If in the real world our money incomes go up at the same rate as prices one might think that inflation does not matter.But it does.When money is losing value it lacks one of the qualities of a good money - stability of value.It is no longer acceptable as a store of value; and it becomes an unsuitable standard of deferred(延迟) payments.Nobody wants to hold a wasting asset(资产), so people try to get rid of money as quickly as possible.Inflation therefore stimulates consumer spending, and prevents people from saving.

1.Inflation is a situation in which __________.

A.we find our money increase in its value

B.employment no longer becomes a problem

C.people can always find better paying jobs

D.money keeps losing its value

2.According to the author, inflation __________.

A.is very common at the present time

B.seldom happens

C.has become rare in recent years

D.is just reasonable

3.According to the passage, if incomes and prices rise together __________.

A.money will hold its value

B.inflation poses no problem

C.inflation will remain to be a problem

D.the business will prosper

4.When money loses its value __________.

A.it is no longer stable

B.its rate against gold will be kept at the same level

C.goods will lose their value

D.incomes will keep rising

5.In a period of inflation, people are likely to __________.

A.invest heavily on the stock market

B.save money

C.hold on to money as a dependable asset

D.spend money and not bother to save