Recently，these companies have ________ some workers becames of the drop in economy.
| A．hired | B．dismissed | C．refused | D．employed |
Carbon dioxide, which makes a ______ between us and the sun, prevents heat from getting out of the atmosphere easily, so the earth is becoming warmer.
| A．difference | B．comparison | C．connection | D．barrier |
Poetry written from the ______ of the urban youth tends to reveal their anxiety over a lack of sense of belonging.
| A．perspective | B．priority | C．participation | D．privilege |
An artist who was recently traveling on a ferry to the southern island discovereda long lost antique Greek vase.
| A． | at random | B． | by chance | C． | in turn | D． | on occasion |
Don't defend him any more. It's obvious that hedestroyed the fence of the garden even without apology.
| A． | accidentally | B． | carelessly | C． | deliberately | D． | clumsily |
He didn't selfishly keep for himself the money inherited from his uncle. Instead, he made acontribution to help the community.
| A． | commercial | B． | generous | C． | comparable | D． | profitable |