在星期天的早晨,假如你乘公共汽车外出,坐在车上,发现一位老太太后来上车了,就站在你的座位旁,这时你会:[ ]
A.主动让座
B.别人让我就让
C.扭过头,假装没有看见
答案:A
昆虫自卵或幼体离开母体到成虫性成熟为止的个体发育周期,称为()。
A.生活年史
B.世代
C.世代重叠
D.性二型
The father has been ________ for many years in order that his only son can be equipped with higher
education. [ ]
A. fighting
B. struggling
C. working
D. laboring