下列哪项是鸟卵中胚胎继续发育的必要条件()
A.一定的恒温条件
B.充足的光照条件
C.充足的水分条件
D.亲鸟的细心照料
参考答案:A
下列各组词语中,错别字最多的一组是( )
A.辍学 诀窍 斑澜 责无旁贷
B.惊咤砝码坐镇食不果腹
C.姿式压韵脉胳铩羽而归
D.蛰伏沉缅剧增强驽之末
Most American cities are relatively small in terms of population when _____ with Chinese cities like Shanghai and Beijing.
A.compare
B.comparing
C.compared
D.to compare