Units 1-2单元测试题 单项选择 ______ the traffic jam, he didn’t catch his plane, which was reported to have crashed soon after it took off. A. Because of B. On account of C. Due to D. Thanks to 2. You have to learn how to be a ______ first, and then to be a student. A. human being B. people C. person D. man 3. A ______ has been launched by the netzens on the Net to get rid of unhealthy information which does harm to young students. A. struggle B. campaign C. fight D. battle 4. Measures have to be taken to teach young people how to ______ themselves both in family and in school. T