用下面的句子组成语意连贯的一段话,句子顺序排列恰当的一项是(　　)①打个比方,学习有点像风,我们肉眼看不见风,而是根据刮风的结果(如树枝摇动)来判断风的强度的。②同样,我们也只能通过测量学习的结果来判断学习是否发生以及学习的性质。③正因为如此,学习与成绩之间有时可能会存在不一致性。④也就是说,学习本身是无法直接测量的,我们能够测量的只是学习结果。⑤学习是一种在学习者内部发生的事情。

in charge of two classes made Mrs. Li, head of Senior Grade 3, extremely tired.

Harry is too thin for his age— So he is, but ______ he is very healthy

Shall we go to spend the winter holiday in Sanya—_______ There must be too many people there.

I don’t want to read this book. There is _______in it.