二、英语知识运用（共两节，满分45分）
第一节 单项填空（共15小题；每小题1分，满分15分）
21. I knew _______ John Lennon, but not _______ famous one.
A. /；a B. a；the C. /；the D. the；a
22. ［2012成都模拟］_______ we promise continuous increase in rural incomes _______ improve the whole people’s well-being.
A. Only if; we can B. Only; can we
C. Only if; can we D. Unless; we can
23. ［2012重庆模拟］I _______ along the street looking for a place to park when the accident _______.
A. went; was occurring
B. went; occurred
