—Would you like to go out for dinner with me?—______,but I have to finish my homework first.
A:Yes, I can
B:Sure, I'd love to
C:Sorry, I can't
D:No, I couldn't
如图,直线l与x轴,y轴分别交于M,N两点,且OM=ON=3.
下列诗句中描述生物影响环境的是
一简易照相机的镜头焦距为6cm,则该相机中胶片离镜头的距离应为()