题目

下面关于图所示实验装置的使用方法中叙述正确的是（） ①用于排水集气：充满水，B进气，A排放水②用于收集密度比空气大的气体：A进气，B排放空气③用于收集密度比空气小的气体：B进气，A排放空气④用于洗气：装入洗液，A进气，B出气⑤用于测量气体的体积：充满水，B进气，A出水，计算溢出水的体积． A . 全正确 B . ②③④⑤ C . ①③④⑤ D . ①②③④（B）请先阅读下面的短文，掌握其大意，然后从方框中所给的词中选出最恰当的一个，并用其适当形式填空，每个词限用一次，并将答案填写在答题卷的相应位置。difference about think habit livelylow mean natural talk keepdifference about think habit livelylow mean natural talk keepAn old saying goes,“ When in Rome（罗马）, do as the Romans do.” I learned the 【1】 of this when I studied in Russia.One day I invited some of my Chinese friends to a famous local restaurant in Moscow. My guests and I were excited 【2】 visiting Red Square and happy about our meeting. We had a warm 【3】 until the waiter told me that we were being too loud. We turn our voices 【4】. But this didn’t last long. The waiter came over to us two more times with the same message.How bad an impression（印象）we must have left on the local people! In China, it’s 【5】 and important for the host to make a 【6】 atmosphere（气氛）. However, in Russia and Western countries, having a meal in a public place means you must 【7】 your voice low. You need to be polite to others.I felt bad about this. Even though we tried our best, it’s very difficult to develop a new 【8】.Russians have their own special habits. My Russian friend, Andrey always looks around and thinks for a while before leaving home. I asked him why he did this.“ Aha,” Andrey said,“ in Russia, people always take about a minute to 【9】 over things and plans in their minds before leaving. So they won’t leave anything necessary behind.”Finding the 【10】 between cultures is much fun. I’d like to keep my eyes and mind open.