第一节 单项填空（共15小题；每小题1分，满分15分）
21. I was searching for ______ information from ______ websites when suddenly my computer went dead.
A. /; / B. the; a C. an; / D. a; /
22. “Goodbye, then, Tommy.” she said, without even ______ from her book. She was so lost in it.
A. looking down B. looking up C. looking away D. looking on
