第二节：单项填空（共15小题，每小题1分，满分15分）
6. Our city has developed into a big city, which is _____ it used to be.
A. four times larger than that B. four times the size larger than what
C. four times the size of what D. as four times the size as that
7. The big snow lasted nearly half a week. What was worse, they were trapped in the mountain and badly ________ food.
A. in search of B. in the hope of C. in want of D. in charge of
