(6分)某芳香族化合物的分子式为C7H8O,根据下列实验现象确定其结构简式:(要求:每小题只需给出一个答案即可。)①不能与金属钠反应,其结构简式______________________________。②能与钠反应,但遇FeCl3不显色______________________________。 ③能与钠反应且遇FeCl3显紫色_______________________________。 答案:(6分)解析:
Fill in the blanks with the verbs in their proper
forms(用所给动词的适当形式填空,词数不限):
Fill in the blanks with the verbs in their proper forms(用所给动词的适当形式填空,词数不限):
He came to attend the party without ______ (invite).