扑救地下商场火灾时，应当利用（）的战术措施，控制火势，消灭火灾。

A、梯队进攻，内外夹击

B、多点进攻，强攻近战

C、梯队掩护，重点突破

D、内外结合，重点突破

Complete the sentences with the given words in their proper forms（用括号中所给单词的适当形式完成下列句子，每空格限填一词)  (共8分)

小题1:Saturday is the ___________ day of a week. (seven)

小题2:Usually people are afraid of ___________ because they may eat humans. (wolf)

小题3:Lei Feng is a good example for us to learn to ___________ the people. (service)

小题4:If people still don’t care enough for the environment, the air will become much ___________. (bad)

小题5:We can learn a lot from ___________ events. (history)

小题6:It is good for you to do all the homework ___________. (you)

小题7:Being kind to others and giving a hand to them when necessary is ___________helpful.

(usual)

小题8:In order to be safer, we have to ___________ that bridge. (builD.