[单项选择]A The new technology used to build roads B The ability to transport goods over land C The trade in grain and cotton D The linking of smaller local roads into one long road

[单项选择]

Minimizing the environmental damage that new roads cause is generally regarded as a good thing. But to do that, it helps to understand just how new roads cause the damage of which they are accused.
Recently, a group of researchers led by Dr Gonzalez conducted an experiment which shows what ecologists have long suspected, but never been able to prove: that immigration is good for the health of animal populations.
A road destroys only a small part of the habitat it traverses, and thus annihilates just a few local populations of creatures. So the argument that road-building itself is bad for biodiversity is not self-evidently correct. Those who nevertheless hold this view usually point to a piece of ecological theory called "meta-population dynamics". This says that apparently separate local populations of animals are, in fact, parts of much larger populations connected via migration.
According to this theory, when a local population flounders &mdas
A. They destroy plants along the roads.
B. They cause damage to nearby forests.
C. They make some natural habitats unlivable.
D. They endanger many species.

[单项选择]
New York used to be the city that never sleeps. These days it’s the city that never smokes, drinks or does anything naughty(at least, not in public). The Big Apple is quickly turning into the Forbidden Apple.
If you wanted a glass of wine with your picnic in Central Park, could you have one No chance. Drinking alcohol in public isn’t allowed. If you decided to feed the birds with the last crumbs(碎屑)of your sandwich, you could be arrested. It’s illegal. If you went to a bar for a drink and a cigarette, that would be OK, wouldn’t it Er...no. You can’t smoke in public in New York City.
What’s going on Why is the city that used to be so open-minded becoming like this The mayor of New York is behind it all. He has brought in a whole lot of new laws to stop citizens from doing what they want, when they want.
The press are shocked. Even the New York police have joined the argument. They recently spent $ 100,000
A. Right
B. Wrong
C. Not mentioned

[单项选择]

New graduates in America are used to facing an uncertain future while saddled with heavy debts. Now Sallie Mae, the firm that provides many of them with the financial wherewithal to complete their education, will understand how they feel. On Monday April 16th it was announced that two private-equity firms along with two banks, JPMorgan Chase and Bank of America, had agreed to pay $25 billion for America’s leading student-loan provider.
In the past decade the market for student loans has doubled to around $85 billion a year. Student numbers have swelled while incomes have failed to keep pace with the soaring cost of college education. Sallie Mae has over a quarter of the entire business in America. And though margins are wafer-thin the firm made a profit of $1.2 billion last year.
This profitability has attracted the interest of both Democratic and Republican lawmakers, seeking ways to save money while making education more affordable. Particularly vulnerable
A. have no idea to deal with the case.
B. ask the army to solve the problem.
C. use its strong system to urge for return.
D. no longer lend money to students.