大学英语课后练习clozeB(十五选十)-2017年10月.doc

Cloze1 In the 21st century, clouds and stormy weather no longer automatically bring operations to a halt or force a change in targets（目标）. Technologies such as the Global Positioning System now allow cruise missiles（巡航导弹） and other smart weapons to home in on（瞄准并飞速接近） their targets. But the weather still is a factor that must be reckoned with, especially with precision-guided weapons that must be highly accurate （高度精确）to be effective. Fortunately, the ability to obtain weather forecasts will get better. In the next few years, remote weather sensors（传感器） will grow rapidly on unmanned （无人的）vehicles. This will create a network of observing platforms that will give commanders an instant overview of weather in the battle zone（战场）. In some areas you’ll have direct delivery of weather information straight from the computes to black boxes in aircraft and other vehicles. That will be especially important for target-bound aircraft（瞄准目标的飞行器）. Such technology will give whoever possess it a tremendous edge（优势） over their enemy and enable them to use developing weather conditions to their advantage. As we get superior satellites into space, we’ll gain huge advantages in observing meteorological conditions in denied areas（盲区）, where we don’t have people on the ground. And our modeling ability will continue to improve as our computers get more powerful. The past 10 years have witnessed a revolution in our communications（通讯） and computer abilities. It’s exciting to think of what the next 10 years will bring. Cloze2 The automobile industry(汽车产业) is one of the most important industries in the world, affecting not only the economy but also the cultures of the world. It provides jobs for millions of people, generates billions of dollars in worldwide revenues（税收）, and provides the basis for a large number of related service and support industries. Automobiles revolutionized transportation in the 20th century, changing forever the way people live, travel , and do business. The automobile