【单选题】关于月经初潮说法错误的是:
B.
月经初潮是女孩青春期来临和性成熟过程中的一项重要标志
【简答题】用数字给下列句子排序。 ( ) Is this your ball? ( ) Whose ball is this? ( ) Yes, it's mine. ( ) You're welcome. ( ) Thank you.
【单选题】! Is this your ball?
【单选题】Is this your ball? __
【单选题】Is this your ball? ___
【单选题】下列关于遗精和月经说法错误的是
A.
遗精是男性进入青春期后有时在睡梦中出现排精的现象
【单选题】— Is this your ball, Nick? — Yes, . [ ]