45×(1-35),
=45×25,
=18(人);
答:这个班女生有18人.
After _________deeply, he jumped into the river to save the drowning child.
A.breath
B.breathe
C.breathed
D.breathing
在浇捣杯形基础混凝土时,尽管安装正常,但杯芯模浮起,其主要原因可能是______。
A.浇灌混凝土速度太快
B.振捣混凝土的力过大
C.杯芯模固定不牢
D.杯芯模底不透气