单项选择题

A．8 1/2 hours.
B．7 1/2 hours.
C．8 hours.
D．9 hours.
<上一题 目录 下一题>
热门 试题

问答题
S2. The factors that stimulate the thin screens to be more and more popular include ________,________ and ________.
单项选择题
A．Nicotine.B．Ashes.C．Smoke.D．Tar.
A．Nicotine.
B．Ashes.
C．Smoke.
D．Tar.
相关试题