漂白治疗常用的药物为（）

A.10%～15%过氧化脲

B.10%～15%过氧化氢

C.20%～30%过氧化脲

D.30%过氧化氢

E.以上均可

用所给的单词适当的形式填空(5%)

小题1:It’s only six ________(minute)to walk from my home to the park.

小题2:It ________(take)me half an hour to get to school by bike.

小题3:Most of ________(they) often go to work by train.

小题4:Jim always __________(forget) to come here on time.

小题5:There _________(be) some milk in the cup.