题目

下列实验的容器中,其解释没有体现水的主要作用的是 ( ) ABCD 实验 装置 解释集气瓶中的水:吸收放出的热量量筒中的水:通过水体积的变化得出O2体积集气瓶中的水:冷却溅落熔融物,防止集气瓶炸裂集气瓶中的水:水先将集气瓶内的空气排净,便于观察氢气何时收集满 答案：【解析】选A。硫在氧气中燃烧时会产生有毒气体二氧化硫,常用水进行吸收,防止对空气造成污染。How can we explain the popularity of neckties? For years, fashion historians have predicted that men would  45 wearing ties because they seemed to have little or no function. It may be that men to them because  ties As long as world and business. leaders continue to wear ties, the young businessmen will  46  them and ties will remain popular.  47 , neckties do have a different kind of appeal. Neckties cover the buttons of the shirt and emphasize the length of a man’s body. They also 48 color and adornment (装饰)to men’s clothing, which is often plain and serious. Today, there are tens of thousands’ of designs of ties  49 . There are, ties for special  50 he. am for Valentine’s Day, fireworks for the Fourth of July, and Santa Claus for Christmas. There are ties that tell you about a man’s 51  pictures of tennis rackets, motorcycles, airplanes, fishing rods, or musical instruments, to name a few. There are even ties  for different occupations such as accountants, firefighter/s, and police officers. And 52 ties are becoming ever more popular. You can get ties covered with colorful frogs and bottles of beer.  53 you enjoy rock music, you can even find a tie in the shape of a guitar! Funny or formal, wide or narrow, it’s  54 that ties are going to be around for a long time.【小题1】A．feat B．mindC．forget D．stop【小题2】A．help B．trustC．follow D．admire【小题3】A．OtherwiseB．ThereforeC．InsteadD．However【小题4】A．addB．changeC．expose D．deliver【小题5】A．valuableB．available C．alternativeD．collective【小题6】A．placesB．ceremonies C．occasionsD．people【小题7】A．holidaysB．imagesC．possessionsD．hobbies【小题8】A．formal B．funny C．plain D．traditional【小题9】A．IfB．Because C．UnlessD．Though【小题10】