薄荷油中的主要化学成分是()
A.(-)薄荷醇
B.(+)薄荷醇
C.(-)新薄荷醇
D.(+)异薄荷醇
E.(-)新异薄荷醇
参考答案:A
_____ poor I am ! I ‘m going to find some part-time jobs.
A.What a
B.What
C.How
D.How a
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