泡沫的生成在钻井液中可能带来不少麻烦，因而需要用消泡剂消泡，消泡剂在溶液表面铺展得越

摘录信息（共5小题；每小题1分，满分5分）
阅读下面短文，根据所读内容在文后第53至第57小题的空格里填上适当的单词或短语，并将答案转写到答题卡上。
注意：每空不超过3个单词。
This is News on the Hour, Ed Wilson reporting.
News One: The president and First Lady will visit Africa on a good will tour in May. They plan to visit eight African countries.
News Two: Reports from China say the Chinese want closer ties between China and the U.S. and Western Europe. A group of top Chinese scientists start its ten-nation tour next month.
News Three: In news about health, scientists in California report findings of a relationship between the drinking of coffee and the increase of heart diseases among women. According to the report in the American Medical Journal, the five-year study shows that: women who drink more than two cups of coffee a day have a greater chance of having heart disease than women who do not.
That’s the news of the hour. And now back to more easy listening with Jan Singer.

News on the Hour
	Country	Events	Time
News One	America	A visit to   53	54
News Two	55	A ten-nation tour	56
News Three	America	a  57  between the drinking of coffee and the increase of heart diseases	/