题目内容
—How is the debate of your essay?
—It ____ well, but I ____one of the key points.
A．might work; hadn’t forgot B．needn’t have worked; forgot
C．could have worked; forgot D．would work; hadn’t forgot
C
【解析】
试题分析：句意：--你的论文答辩怎样？--它本来进行地很好，但是我忘了其中的一个重点。needn’t have worked表示过去没有必要做好，很显然不符合语境；这里指过去本能进行地很好，所以用could have worked，多于回答者来说答辩已经结束，忘记重要的内容也是发生在过去，所以应该用过去式，故选C。
考点：考查情态动词的用法。
点评：本题难度适中。情态动词是高中阶段的重要的语法项目，需要考生掌握它们的不同的语法及区别，尤其是情态动词的完成式表示对过去的推测，不同的情态动词推测的可能性大小上不同，需要考生理解它们的不同的语法。
即学即练：—I heard the phone ringing in the office next door.
—You ________ it. They haven’t got a phone yet.
A.couldn’t hear B.couldn’t have heard
C.didn’t hear D.wouldn’t have heard
解析：B。由句意可知此处是对过去的事情表示推测，那么否定句用“can/could not+完成时”，故选B。
As the railroads and the highways shaped the American West in the past centuries, a new electrical generating(发电)and transmission (输送) system for the 21st century will leave a lasting mark on the West, for better or worse. Much of the real significance of railroads and highways is not in their direct physical effect on the scenery, but in the ways that they affect the surrounding community. The same is true of big solar plants and the power lines that will be laid down to move electricity around.
The 19 th century saw land grants(政府拨地) offered to railroad companies to build the transcontinental railroads, leaving public land in between privately owned land. In much of the West, some of the railroad sections were developed while others remained undeveloped, and in both cases the landownership has presented unique challenges to land management. With the completion of the interstate highway system, many of the small towns, which sprang up as railway stops and developed well, have lost their lifeblood and died.
Big solar plants and their power lines will also have effects far beyond their direct footprint in the West. This is not an argument against building them. We need alternative energy badly, and to really take advantage of it we need to be able to move electricity around far more readily than we can now.
So trade-offs will have to be made. Some scenic spots will be sacrificed. Some species(物种) will be forced to move, or will be carefully moved to special accommodations. Deals will be struck to reduce the immediate effects.
The lasting effects of these trade-offs are another matter. The 21st century development of the American West as an ideal place for alternative energy is going to throw off a lot of power and money in the region. There are chances for that power and money to do a lot of good. But it is just as likely that they will be spent wastefully and will leave new problems behind, just like the railroads and the highways.
The money set aside in negotiated trade-offs and the institutions that control it will shape the West far beyond the immediate footprint of power plants and transmission lines. So let’s remember the effects of the railroads and the highways as we construct these new power plants in the West.
【小题1】What was the problem caused by the construction of the railways?
| A．Small towns along the railways became abandoned. |
| B．Land in the West was hard to manage. |
| C．Some railroad stops remained underused. |
| D．Land grants went into private hands. |
| A．The use of money and power. |
| B．The transmission of power. |
| C．The conservation of solar energy. |
| D．The selection of an ideal place. |
| A．Disapproving. | B．Approving. | C．Doubtful. | D．Cautious. |
| A．How the Railways Have Affected the West |
| B．How the Effects of Power Plants Can Be Reduced |
| C．How Solar Energy Could Reshape the West |
| D．How the Problems of the Highways Have Been Settled |