My ship has been delayed()poor visibility.
A.because
B.in reason of
C.owing to
D.for
参考答案:C
一杯浑浊的江水,利用下列不同的净化方法,其净化效果最好的是( )
A.静置沉淀
B.反复过滤
C.反复蒸馏
D.活性炭吸附
西文字符无论在全角还是在半角下都只有半个汉字宽度。( )