第二部分 语法与词汇
第一节 单项选择（共10题，每题1分，共10分）
21. Greenhouse phenomena would cause ______ rise in sea levels worldwide and change ______ weather on the earth.
A. a; the B. the; 不填 C. a; 不填 D. 不填; the
22. Although________to stop，he kept on working.
A. tell B. told C. was told D. having told
