[填空题]Barack and Michelle Obama understand the heavy burden of student loan debt. The Obamas did not pay off their student loans until Obama’s best-selling books earned them millions of dollars.
With the cost of a college education (47) , more than 60% of students take out loans to fund their undergraduate education. On average, students who borrow graduate with debts of 22,700--a (48) of more than 18% from 2000. But some of those with a newly acquired bachelor’s degree are restrained with debts of 40,000 or more. You think this economy’s tough Try finding a job with the (49) of repaying tens of thousands of dollars in debt.
Now, a new federal program--Income-Based Repayment--is making it (50) to pay back these loans. If a student chooses to repay her or his loan with this plan, payments are then readjusted--based on their income to something they can (51) afford. All debt will be forgiven after 25 years. A graduate

[填空题]Barack and Michelle Obama understand the heavy burden of student loan debt. The Obamas did not pay off their student loans until Obama’s best-selling books earned them millions of dollars.
With the cost of a college education (47) , more than 60% of students take out loans to fund their undergraduate education. On average, students who borrow graduate with debts of 22,700--a (48) of more than 18% from 2000. But some of those with a newly acquired bachelor’s degree are restrained with debts of 40,000 or more. You think this economy’s tough Try finding a job with the (49) of repaying tens of thousands of dollars in debt.
Now, a new federal program--Income-Based Repayment--is making it (50) to pay back these loans. If a student chooses to repay her or his loan with this plan, payments are then readjusted--based on their income to something they can (51) afford. All debt will be forgiven after 25 years. A graduate

[单项选择]

Senator Barack Obama likes to joke that the battle for the Democratic presidential nomination has been going on so long, babies have been born, and they’ re already walking and talking. That’s nothing. The battle between the sciences and the humanities has been going on for so long, its early participants have stopped walking and talking, because they’re already dead.
It’s been some 50 years since the physicist-turned-novelist C. P. Snow delivered his famous "Two Cultures" lecture at the University of Cambridge, in which he decried the "gulf of mutual incomprehension", the "hostility and dislike" that divided the world’s "natural scientists", its chemists, engineers, physicists and biologists, from its "literary intellectuals", a group that, by Snow’s reckoning, included pretty much everyone who wasn’t a scientist. His critique set off a frenzy of desperation that continues to this
A. posing a contrast
B. justifying an assumption
C. making a comparison
D. explaining a phenomenon