一些题

kun861010

Currently 26 billion barrels a year, world consumption of oil is rising at a rate of 2 percent annually.

A. world consumption of oil is rising at a rate of

B. the world is consuming oil at an increasing rate of

C. the world’s oil is being consumed at the increasing rate of

D. the rise in the rate of the world’s oil consumption is

E. oil is consumed by the world at an increasing rate of

A是正确答案，但是我觉得b也没什么不对啊，难道是强调重心错了？

For the farmer who takes care to keep them cool, providing them with high-energy feed, and milking them regularly, Holstein cows are producing an average of 2,275 gallons of mild each per year.

A. providing them with high-energy feed, and milking them regularly, Holstein cows are producing

B. providing them with high-energy feed, and milked regularly, the Holstein cow produces

C. provided with high-energy feed, and milking them regularly, Holstein cows are producing

D. provided with high-energy feed, and milked regularly, the Holstein cow produces

E. provided with high-energy feed, and milked regularly, Holstein cows will produce

正确答案是e，但是我选的是d。因为我觉得一般现在是不是应该表示一个事实嘛，这里用将来式为什么正确呢？

Galileo did not invent the telescope, but on hearing, in 1609, that such an optical instrument had been made, he quickly built his own device from an organ pipe and spectacle lenses.

A. Galileo did not invent the telescope, but on hearing, in 1609, that such an optical instrument had been made, he

B. Galileo had not invented the telescope, but when he heard, in 1609, of such an optical instrument having been made,

C. Galileo, even though he had not invented the telescope, on hearing, in1609, that such an optical instrument had been made, he

D. Even though Galileo did not invent the telescope, on hearing, in 1609, that such an optical instrument had been made,

E. Even though Galileo did not invent the telescope, but when he heard, 1609, of such an optical instrument being made, he

正确答案是a，但是这里的，that是不是不能这么用啊？

kun861010

help！