早晨学校升国旗,小庄发现国旗朝西北飘扬,此时的风向是( )
A:东北风
B:西南风
C:东南风
D:西北风
动物的行为可分为先天性行为和后天性行为.有关叙述错误的是( )
—Lucy, I think.
制药厂常将药物封装在淀粉制成的胶囊中口服,以免对胃产生刺激.从消化特点看( )
—When were you born?—I was born ________ April 23, 1979.