1) How many people does the author say have tried stepping out of their comfort zone? ______
A. 98 percent.
B. The great majority.
C. A very small percentage.
D. About half.
Your journey through higher education will ______.
A. put you to the test constantly
B. damage your nerves
C. certainly help develop your ability
D. Solve your life's puzzles
When the author first gave presentations, ______.
A. he was cool and confident
B. he appeared nervous
C. he was anxious to get feedback
D. he failed totally
磺胺类的抗菌机制
A. 抗叶酸代谢
B. 抑制蛋白质合成
C. 抑制细胞壁合成
D. 抑制胞浆膜通透性
E. 抑制细菌核酸代谢
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