单项选择题
A. She found she wasn’t registered in Chemistry 302A. B. She found she was registered in Chemistry 302B. C. She was unsure which class she had registered. D. She wasn’t registered in Chemistry 302B.
A. How people fall ill. B. The influence of people’s emotions on their health. C. A new method to cure breast cancer. D. Several ways to keep fit.
A. The woman invites the man to have dinner. B. The man won’t visit the woman. C. The man is very busy these days. D. The man’s wife is relatively free.