问题
单项选择题
钢筋混凝土无梁楼盖结构，采用下列哪一种方法对提高其侧向刚度最有效
A．加厚楼板
B．加大柱断面尺寸
C．提高柱混凝土强度等级
D．增设剪力墙
答案
参考答案：D
解析： 在钢筋混凝土无梁楼盖结构中，根据需要，适当增设一些剪力墙对提高结构的侧向刚度最有效。
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钢筋混凝土无梁楼盖结构，采用下列哪一种方法对提高其侧向刚度最有效
A．加厚楼板
B．加大柱断面尺寸
C．提高柱混凝土强度等级
D．增设剪力墙
参考答案：D
解析： 在钢筋混凝土无梁楼盖结构中，根据需要，适当增设一些剪力墙对提高结构的侧向刚度最有效。
If you want to learn a new language，the very first thing to think about is why.Do you need it for a____reason，such as your job or your studies？__2__perhaps you’re interested in the____，films or music of a different country and you know how much it will help to have a____of the language. Most people learn best using a variety of____，but traditional classes are an ideal(理想的)start for many people.They____an environment where you can practice under the ____ of someone who’s good at the language.We all lead ____ lives and learning a language takes____.You will have more success if you study regularly，so try to develop a____.It doesn’t matter if you haven’t got long.Becoming fluent in a language will take years，but learning to get by takes____. Many people start learning a language and soon give up.“I’m too____，” they say.Yes，children do learn languages more ___ than adults，but research has shown that you can learn a language at any____.And learning is good for the health of your brain，too.I’ve also heard people____ about the mistakes they make when____.Well，relax and laugh about your mistakes ____you’re much less likely to make them again. Learning a new language is never ___.But with some work and devotion，you’ll make progress.And you’ll be ____by the positive reaction of some people when you say just a few words in ___ own language.Good luck！ (2013·安徽)
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