题目内容

If you ____this problem, you can turn to your teacher for help.

A. are confused
B. are confusing
C. were confused
D. were confusing

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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

瓜蒌的主治证是（）

A. 结胸
B. 胸痹
C. 肺痈
D. 肠痈
E. 乳痈

分别画出平行透视图、成角透视图和倾斜透视图。