A. cheap B. empty C. useless D. improper

Fires resulting from spontaneous combustion are usually caused by the improper disposal of

According to the man, why do modern books decay？A．They are often handled improperly by rea

Which of the following is an improper behavior. when taking the phone interview？A．Sipping

A conversation with your faraway friend is useless.（)

Your improper words will give______to doubts concerning your true intentions.A．riseB．reaso

下列函数结果为.T.的是A）EMPTY（SPACE（5）） B）EMPTY（.NULL.）C）ISNULL（”） D）ISNULL（{}）