air purification
第1题:
Passenger should () and prepare their ().
A.air-ticket
B.boarding card
C.airport fee
D.line up in order
第2题:
第3题:
Mr. McNeil asked Mr. Don Bradley to ship the goods()air.
Aby
Bon
Cat
Din
第4题:
[A] might [B] distance [C] air [D] power
本题考查根据上下文选择恰当的词。四个选项的含义分别是might“力量”,distance“距离”,air“空气”,power“力量,势力”。根据空格所在句子的含义,应选[B],表示“当有足够的车距时,你才慢慢地挪到卡车的前方”。
第5题:
第6题:
Such problem ()air, water, and noise pollutions are becoming more and more serious in some big cities.
Alike
Bas
Cof
Dabout