1.Having ________ nomeat day would be a good way of encouraging ________ lowcarbon lifestyle.
A. a; the B. a; a
C. the; the D. the; a
答案与解析：B 第一空用不定冠词修饰nomeat day表示“不吃肉的一天”；第二空表示“一种低碳的生活方式”。表示泛指，所以这里选B项。
2．Jack wanted to be ________ university student, but in ________ entrance examination he missed by a mile.
A. a; an B. an; the
C. the; an D. a; the
答案与解析：D a university student一名大学生，表泛指；the entrance examination特指入学考试。
