单项选择题

A．The ways of keeping food eatable for a longer time.
B．The killing of bacteria.
C．The invention of the refrigerator.
D．The role bacteria play.
<上一题 目录 下一题>
热门 试题

单项选择题
A．An X-ray camera.B．A movie camera.C．Photographer’s camera.D．A television camera.
A．An X-ray camera.
B．A movie camera.
C．Photographer’s camera.
D．A television camera.
单项选择题
A．There is still honesty.B．There is no honesty.C．Honesty is not important.D．None of the above.
A．There is still honesty.
B．There is no honesty.
C．Honesty is not important.
D．None of the above.
相关试题