— Helen, would you like to go to the park with me?
— .
A:Sorry, I wouldn't
B:Yes, I'd love
C:That's right
D:That's a good idea
下列语句中,划线字的解释不正确的一项是( )
下列动物行为中,不属于学习行为的是( )
西周实行的宗法制在秦汉以后仍有重大影响,其主要表现是
把重为5N,体积为600cm3的物体投入水中,若不计水的阻力,当物体静止时,下列说法正确的是(g取10N/kg)( )