题干
—Don't smoke any more. It's bad for your health.
—I'm trying to ________.It's really hard, you know.
A：turn it on
B：put it off
C：give it up
D：take it out
答案(点此获取答案解析）
C
株黄果南瓜和一株白果南瓜杂交，
自交产生的
的表现型如右图所示，根据图示分析，下列说法错误的是（ ）
