下列有关动物生殖发育的叙述中,错误的是( )
A:苍蝇的发育过程属于完全变态发育
B:青蛙的生殖和发育过程都离不开水
C:蝴蝶的发育包括受精卵、幼虫和成虫三个阶段
D:牛的生殖发育最主要特点是胎生、哺乳
写作:____ 读作:____
为探究验证成分在空气中和人体呼出气体中含量的不同设计如下实验,(②③为人呼出气)
In my driving lesson, I learned a traffic rule that at no time _____ parked in a manner which will block emergency service.
My sister likes cartoons best. So she often spends a lot of time ________ TV in the evening.