香加皮的香气成分是（）
A．4-甲氧基水杨醛
B．七叶树苷和七叶树素
C．牡丹酚
D．α、β-桉油醇
E．松酯醇二-β-D-葡萄糖苷酚
参考答案：A
His honesty is beyond question.In other words,it is____ that he has stolen the laptop computer.
A．certain
B．sure
C．out of question
D．out of the question
脊髓灰质炎减毒活疫苗怎样服用？为什么？
sty is beyond question.In other words,it is____ that he has stolen the laptop computer.