去除热原质最好的方法是
A. 蒸馏法
B. 高压蒸汽灭菌法
C. 滤过法
D. 巴氏消毒法
E. 干燥法
If you ____this problem, you can turn to your teacher for help.
A. are confused
B. are confusing
C. were confused
D. were confusing
In this sentence the preposition “with” can be omitted.
A. 对
B. 错
既能清热涤痰又能润燥滑肠的药物是()
A. 瓜蒌仁
B. 苦杏仁
C. 火麻仁
D. 郁李仁
E. 柏子仁