题目

    English is a language  (61)  (speak) all around the world. There are more than 42 countries   (62)  the majority (大多数) of the people speak English. Most native speakers of English  (63)   (find) in the United Kingdom, the United States of America, Canada, Australia, South Africa, Ireland and New Zealand. In total, for more than 375 million people English is their mother tongue.   (64)  equal number of people learn English as a second language. These people will perhaps speak the language of their own country at home with their family, but the language of 一天，小高在某科技馆发现了一个大水管（如图）。当小高向管内打气时，由于水中产生大量气泡，从而使“潜水员”排开水的体积变小。此时，“潜水员”受到的浮力将   ▲  （填“变大”、“变小”或“不变，’）。