()在潮湿的条件下,会变软甚至下垂应尽量避免存放在潮湿的环境中。
A、鲜切花
B、绢花
C、干花
D、永生花
参考答案:C
—I'm afraid I can't return he the book to you before Tuesday.
—________.[ ]
A. Don't be afraid
B. You are welcome
C. Take your time
D. Be careful
不法分子常用金光闪闪的“金元宝”(铜锌合金)蒙骗人们。下列鉴别方法中错误的是( )
A.加盐酸
B.测密度
C.加硝酸银溶液
D.看颜色