在盛有碘水的试管中,加入少量CCl4后振荡,静置片刻后 ( )
It's time______class. Lets go into the classroom.
OK.( )
for
of
in
找出画线部分与其他单词发音不同的选项.( )
knee
knock
kilo
autumn
August
aunt
worse
storm
north
follow
rose
hobby