A:①④
B:①③
C:②④
D:①②
两个物体分别挂在弹簧测力计上,将它们同时浸没到水中,发现两个弹簧测力计的示数的减小值相同.由此可以判断( )
如图是鸡的受精卵及其胚胎发育的结构示意图,请据图回答下列问题:
— Would you please not make so much noise?
—__________, we will be quiet.
—No, I haven't. I prefer running.