breathe v．呼吸

　　asthma n．[医]气喘，哮喘

　　Ⅰ.Match the word with its meaning.

　　1．frightening　A．沙尘；灰尘

　　2．mass B．公民；市民

　　3．campaign C．预报；预告

　　4．process D．力量；力气

　　5．citizen E．吓人的；可怕的

　　6．dust F．面罩

　　7．forecast G．骑自行车

　　8．strength H．战役；活动

　　9．cycle I．进程；过程

　　10．mask J．大量的；大规模的

　　答案：1～5　EJHIB　6～10　ACDGF

　　Ⅱ.Write down the meaning of phrases in each sentence.

　　1．She called them one after another by name, but no one answered.一个接一个地

　　2．He was totally blind as a result of the traffic accident.由于......

　　3．All of the trees were cut down, and none was left.砍倒

　　4．I was caught in a heavy rain last Sunday.突然遭遇

　　5．We dug up the tree by its roots.挖出

　　6．Further treatment will prevent cancer from developing.阻止......做......