每本练习本x元,8本练习本共______元.
每本练习本x元,8本练习本共8x元.
故答案为:8x.
根据汉语填写单词或根据所给词填写适当形式。
1. What's _______ (she) name?
2. Look at these _______ (照片), please.
3. Can you _______ (拼写) it, please?
4. Bill _______ (watch) TV every day.
5. Mary's brother and sister are _______ (run).
按胆结石的化学成分划分,胆囊结石分为哪三类()
A.胆固醇,胆色素,混合性
B.胆固醇,胆色素,草酸钙
C.胆固醇,草酸钙,混合性
D.胆色素,草酸钙,混合性
E.胆红素,胆色素,草酸钙