第4题: [单项选择]Questions 19 to 21 are based on the conversation you have just heard. A. 3-6 months of monthly salary B. 13% of their monthly salary C. 10 dollars a week D. 36% of their monthly salary 参考答案:A 答案解析:[听力原文] 19-21 M: Do you think people today do a good job of planning for financial emergencies 第5题:[单选题]煤的粘结性受煤的煤化程度.煤岩组成.氧化程度.灰分等多种因素影响,一般()。 A.煤化程度最高和最低的煤一般都有粘结性 B.煤化程度最高和最低的煤一般都没有粘结性 C.煤化程度高的煤有粘结性,煤化程度低的没有粘结性 D.煤化程度高的煤没有粘结性,煤化程度低的有粘结性 参考答案:B