12.【题干】We are worried about this fluid situation full with uncertainty.

　　A.stable

　　B.suitable

　　C.changeable

　　D.adaptable

　　13.【题干】They have built canals to irrigate the desert.

　　A.decorate

　　B.change

　　C.visit

　　D.water

　　14.【题干】The details of the costume were totally authentic.

　　A.outstanding

　　B.real

　　C.creative

　　D.false

　　15.【题干】The new garment fits her perfectly.

　　A.clothes

　　B.haircut

　　C.purse

　　D.necklace

　　综合B词汇选项

　　1. All houses within 100 meters of the seas are at risk of flooding.

　　A. In danger B. out of control C. between equals D. in particular ..........