在使液体通过的同时，保持受渗透压力作用的土粒不流失的作用称为（）。 A.反滤 B.防

用方框中所给单词的适当形式填空。每词限用一次。

nearly   busy   milk   herself   wear

小题1:My parents are very _______ every day except weekends.
小题2:If you don’t sleep well, you can drink some ________ before you go to bed.
小题3:She often ________ a white dress. White is her favorite.
小题4:Susan cooked dinner for ________ when she studied in Canada.
小题5:I have learned English for ________ 10 years and I’m very good at it.