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21.Right now there is a sale of 19th-century European Paintings and sculpture in the museum.
A.photographs B.images C.statues D.stone paintings
22.The more intrusive advertisements become, the more they irritate web users.
A.annoy B.dismay C.surprise D.startle
23.Both police officers and high officials here are susceptible to corruption.
A.sustainable B.suspicious C.skeptical D.vulnerable
24.In the new shark repellent method, an insulated cable is buried on the bottom of the sea around a beach from which people swim.
A.frightening B.resisting C.protective D.raising