完形填空
Book2 Unit4 Cloze
As a boy and as an adult, the author of this article felt awed（敬畏）and bewildered(1) at the personality of his father's friend, the great scientist Albert Einstein .What impressed(2) him most was Einstein's modest(3) manner. Though a profound(4) thinker, Einstein never displayed(5)vanity, jealousy, or personal ambition(6), and though his idea his ideas were singled out(7)as something special and he was awarded the Nobel Prize, he seemed to find his own fame a puzzle(8). It appeared that the great man was not capable （9）of conceit（自高自大）or pretension ;and for this reason, the author always felt at ease(10) in his presence.
作为一个孩子，作为一个成年人，这篇文章感到敬畏和困惑在他父亲的朋友的个性的作者，伟大的科学家艾伯特爱因斯坦。给他印象最深的是爱因斯坦的谦虚的态度。爱因斯坦虽然有一个深刻的思想家，但却从未表现出虚荣、嫉妒或个人野心，但他认为自己的想法被单独挑出来，他被授予了诺贝尔奖，他似乎找到了自己的名声。看来，人是不能够伟大的自负或骄傲；因为这个原因，笔者总觉得在他面前轻松。
Book2 Unit5 Close
It is apparent(1)that the temperature of the earth is rising. If this trend is allowed to continue, many coastal cities will disappear(2)beneath the ocean waves, much farmland will be lost to the sea, and the resulting pressure(3) on food supply may cause widespread(4) starvation and lead to the collapse(5) of the whole social structure.
What’s to be done?There’s no alternative(6) but to get at the villain of all this, carbon dioxide. Carbon dioxide is not very poisonous, and in small quantities it does us no harm(7). Plants absorb it and convert into their own tissue(8), which serve as the basic food supply for all of animal life, including human beings. In the process they liberate(9) oxygen, which,
again, is essential to all of animal life. However, carbon dioxide lets in visible(10) sunlight during the day, but blocks infrared radiation(11)at night. When its concentration in the atmosphere rises, the temperature on earth goes up, too.
But carbon dioxide is not rising by itself(12). If we stop cutting down the forests and consume(13) less and less coal and gas, or use fuel that does not produce carbon dioxide, such as nuclear and solar energy, in all likelihood(14) ,we can restore its concentration to previous levels, we can restore its concentration to previous levels and save mankind from disaster.
很明显，地球的温度正在上升。如果允许这种趋势继续下去，许多沿海城市就会消失在海浪之下，许多农田都会消失在海上，由此造成的粮食供应压力可能会导致大范围的饥荒，导致整个社会结构的崩溃。
做什么？没有其他的选择，但要得到所有这些，二氧化碳的恶棍。二氧化碳不是很有毒，而且在少量它对我们没有坏处。植物吸收它并转化成他们自己的组织，它可以作为所有动物生命的基本食物，包括人类。在这个过程中，他们解放了氧气，而这又是动物生活中必不可少的一次。然而，二氧化碳可以在可见光的白天，但在夜间阻断红外线辐射。当大气中的浓度上升时，地球上的温度也会上升。但二氧化碳本身并没有上升。如果我们停止砍伐森林，减少煤炭和天然气，或者使用不产生二氧化碳的燃料，如核能和太阳能，我们可以恢复其浓度，我们可以恢复它的浓度到以前的水平，并拯救人类的灾难。
Book2 Unit6 Cloze
believes that the most important time in a surgical(1) career is the point at which the surgeon begins to feel confident(2)in his ability to make sound decisions in each individual case. Many young doctors dwell on(3) the possibility that they may have made a mistake, especially in emergency(4)situations. At such times, they sweat(5)over patients, wondering if they are competent(6)enough for the job they are attempting to do. And they feel that they are bound to make a fatal(致命的) error at one time or another（7）.When a surgeon
