题干
— Tim, how do your parents like pop music?
— ______ my dad _______ my mom likes it. They both prefer classical music.
A：Either; or
B：Neither; nor
C：Not only; but also
D：Both; and
答案(点此获取答案解析）
B
如图所示，弹簧秤和细线的重力及一切摩擦不计，物重G=1N，则弹簧秤