09届高中毕业班英语10月份质量检测
第一节 单项填空(共15小题;每小题1分,满分15分)
21. Students should be encouraged to use ___ Internet as ____ resource.
A. 不填;a B. 不填;the C. the; the D. the; a
22. He found it increasingly difficult to read, ____ his eyesight was beginning to fail.
A. though B. for C. but D. so