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.
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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
四环素的抗菌机制
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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