未知题型 听力原文： Joe is a student at a college in an open areA.During his first two semesters, he did very well and at the beginning of third semester he was admitted to a special medical program. If he completed the program successfully, he would be granted admission to a good medical school. He would be able to study to become a doctor. Joe's mother and father both have full-time jobs and Joe works part-time at a restaurant to help the family finances.Several weeks ago, Joe's mother began feeling sharp chest pains. When she went to a doctor, he told her that she would need a heart surgery and would have to give up her joB.This would enlarge medical expenses and lose almost half the family incomE.Joe's father wants him to drop out of school and go to work full-time to help the family. Joe loves his family very much. But, if he drops out now, he would lose entire semester's credit and may even lose his place in the premedical program.He doesn't know what to do. He speaks to his girlfriend Maria who urges him to remain in school since to withdraw now would place his entire future in danger. He also speaks to his cousin Carol, who tells him that his first duty is to help his family get through the difficult times.(33)A.In the first semester.B.In the second semester.C.In the third semester.D.In the fourth semester.

未知题型 在跨文化交际中，由于（）使人们对于某个人或群体的属性已有一套信念，因而常常使交际出现障碍。

单项选择题 长期以来，人类创造了前所未有的经济增长成就，但一些国家发展遇到了这样那样的问题，这些问题不包括（ ） A、经济结构失衡 B、人口膨胀 C、能源资源紧张 D、.生态环境恶化