I. 单项填空：（共15小题，每题1分，满分15分）
1. When facing difficulties, courage and ____ spirit of independence can be more useful than crying for ____ help.
A. /; a B. the; a C. a; / D. /; /
2. Compared with his sister, Jerry is even more ___ to, and more easily troubled by, emotional and relationship problems.
A. sceptical B. addicted C. available D. sensitive
3. The recent airplane crash ___ my belief that stronger safety regulations are needed.
A. confirms B. combines C. conducts D. conforms
4. All the dishes in this menu, _____ otherwise stated, will serve two to three people.
A. as B. if C. though D. unless
