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【单选题】
Part Ⅱ Reading Comprehension (Skimming and Scanning) Directions: In this part, you will have 15 minutes to go over the passage quickly and answer the questions on Answer sheet 1. For questions 1-7, choose the best answer from the four choices marked A), B), C)and D). For questions 8-10, complete the sentences with the information given in the passage. What's the right activity for me? Whoever you are. there's an activity for you. And just as getting fitter doesn't have to mean pushing yourself to the limits of your endurance, you don't have to be technically brilliant at a particular sport to derive pleasure and health benefits from it. Some people hold back from getting fit because they feel self-conscious about their ability or body and want to find an activity they can do on their own, but organized classes and sports clubs can provide you with support and motivation, as well as a chance to make new friends. If you're interested in football, hockey or other team sports, for example, many local clubs will have several teams of varying abilities, while there are plenty of aerobics or yoga classes specifically designed to cater for beginners. You're never too old to learn to swim, or you can take classes to improve your technique if that's what's holding you back. But many activities can be done by yourself, and require neither technical expertise nor much in the way of equipment or expense just your willingness togive it a go. Here are some of the best, easiest and most popular ways to start getting fit, as well as some suggestions for alternatives, that get you started or put you in touch with a local club. Walking Most of us walk at some point each day but we do it far less than we used to. The government calculates there's been a decline of more than 20 percent in the number of miles walked since the mid-1980s. But walking is the simplest and cheapest of all exercises, and making it a regular activity and focusing on the intensity or distance covered can greatly increase your fitness. Walking improves the condition of your heart and lungs and works the muscles of the lower body. It's a weight-bearing activity, so it may improve bone density, yet it's also low impact, putting less stress on the joints than some other forms of exercise. Aside from the health benefits of walking, some of the country's most beautiful scenery can only be accessed on foot, so if you don't try walking, think what you're denying yourself. If you're a novice, go in groups or as part of an organized outing via a ramblers club. Walking up hills expends more energy--even walking down again uses more energy than walking on the flat, but if you don't think you're ready for the hills yet, boost your fitness by walking just about anywhere. You could try power walking in the park. For example: the idea is to walk at such a fast pace that it would actually be easier to break into a run. You burn more calories walking at this speed than you would running at the same pace. Running/jogging Running might just be the ultimate way to get fit: it's cheap, can be done anywhere, at any time and, most importantly, is very effective. There's really no difference between running and jogging, although jogging is often used to describe running at a slow pace. Whatever you call it, all you need is a good pair of running shoes and a little enthusiasm. As long as you're healthy and take it easy to start with, anyone can run. If you have a history of certain diseases like chest pain, high blood pressure, or have had recent surgery or are pregnant, consult a doctor first. As a high-impact activity, running may maintain or increase bone density. But
A.
Offering readers information about sports activities.
B.
Persuading readers to try cheap ways of exercise.
C.
Attracting potential athletes to register for sports events.
D.
Asking people to donate in order to develop public sports.
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参考答案:
举一反三
【单选题】设有文法G[S]: S->b|bB B->bS
A.
{ |i 0}
B.
{ |i 0}
C.
{ |i 0}
D.
{ |i 1}
【单选题】设有文法G[S]: S→ S*S | S+S | (S) | a,该文法( )二义性文法。
A.
B.
不是
C.
不一定
【单选题】为了培育节水高产品种,科学家将大麦中与抗旱节水有关的基因导入小麦,得到转基因小麦,其水分利用率提高了 20% 。这项技术的遗传学原理是
A.
基因突变
B.
基因重组
C.
基因复制
D.
基因分离
【单选题】环境保护法最早规定的三项基本制度是指()。
A.
环境影响评价制度、排污许可证制度和“三同时”制度
B.
限期治理制度、排污收费制度和目标责任制度
C.
限期治理制度、排污许可证制度和“三同时”制度
D.
环境影响评价制度、排污收费制度和“三同时”制度
【单选题】科学家为了培育节水高产品种,将大麦中与抗旱节水有关的基因导入小麦,得到转基因小麦,其水分利用率提高了20%。这项技术的遗传学原理是()
A.
基因突变
B.
基因重组
C.
基因复制
D.
基因分离
【简答题】我们第二章学习了ARM的内核,现在请广泛查阅资料,选择一款基于Cortex-A或者Cortex-R的内核(比如A8,A15或其他......),看看它的内核里都有什么?与我们学过的M3/M4系列相比,有哪些相同的地方,还有哪些不一样的地方?(比如:应用领域具体在哪里?流水线的级数是否相同?总线矩阵是如何设置的?寄存器又是怎样的?特殊功能寄存器有哪些不同?......) 要求:形式:手写拍照上传,不...
【简答题】Cortex-M3 内核有哪些寄存器?功能是什么?
【单选题】为了培育节水型、高产的新品种,科学家将大麦细胞中与抗旱有关的基因导人到小麦中,得到转基因小麦,其水分利用率提高了 20%左右,这项技术的遗传学原理是 ( )
A.
基因突变
B.
基因重组
C.
基因复制
D.
基因分离
【判断题】麦克斯韦方程组的解直接确认光就是电磁波。()
A.
正确
B.
错误
【简答题】环境保护法最早规定的三项基本制度是指()。 (A)环境影响评价制度、排污许可证制度和“三同时”制度 (B)限期治理制度、排污收费制度和目标责任制度 (C)限期治理制度、排污许可证制度和“三同时”制度 (D)环境影响评价制度、排污收费制度和“三同时”制度
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