大学英语(2)期末复习题

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Dear students, My field falls within basic science research – the mobile platform detection technology. As an important research field of __1__, this technology is absolutely challenging. My work aims to develop mobile __2__ for ships and vehicles, use geophysical detection equipment and technology to __3__ multi-information, based on which to build models, and provide technical support for energy and mineral resources exploration. This technology can clearly __4__ what's down there two kilometers or more below the ground. As China becomes a stronger and more __5__ nation, it needs many people who have studied abroad to return to the motherland and help with its modernization. I hope that we can together make __6__ contributions to the development of China's science and technology. As the representative of your teachers, I would like to say that no matter whether your __7__ lead you to success or failure, no matter whether you are doing fine or not, and no matter whether your life is __8__ or boring, you will always be in our mind because we care about you. As you are about to graduate from college and join in efforts to __9__ our nation, we'll share the responsibilities and happiness with you. How time flies! I still remember the time when I was standing where you are now. It's __10__ my pleasure to come back to my alma mater after I graduated 18 years ago. No matter how many ups and downs you'll go through, I hope you can remember our college and return as often as you can. We'll cheer you on! Go! Go!
It's well known that physical exercise is beneficial not just to physical health but also to mental health. Yet whereas most countries have __1__evidence-backed guidelines on the type and intensity of exercise __2__for various physical health benefits, such guidelines do not yet exist for exercise and mood. This is __3__due to a lack of necessary evidence. However, a new systematic review brings us usefully up-to-date on the current findings in this area. Before __4__into some of the key take-aways, an important __5__made in the review is between aerobic exercise and anaerobic. The former__6__such things as walking, jogging and cycling and means exercising in such a way that your body is able to use oxygen to burn fat for energy. In contrast, anaerobic exercise—such as lifting heavy weights—is of such __7__intensity that your body does not have time to use oxygen to create energy and so instead it breaks down glucose (葡萄糖) in your blood or muscles. Beginning first with the influence of exercise intensity on the mood benefits of aerobic exercise, the researchers, led by John Chan at Shenzhen University, found __8__results from 19 relevant studies. Some favoured higher intensity, others low, while seven studies found that intensity made no __9__to mood benefits. In relation to the intensity of anaerobic exercise, however, the results were far clearer—the optimum (最佳选择) for improving mood is __10__intensity, perhaps because low intensity is too dull while high intensity is too unpleasant.