Before the opening ceremony of the supermarket, some workers are sent to _____ leaflets on the road.

This is a picture of DrYuan, a scientist ____ is well known in our country

Mary, how many students are there in your school—

I’m going to be an English teacher and ______ English every day.

依次填入下面一段文字横线处的语句，衔接最恰当的一项是中国茶具有红、绿、青、黄、白、黑六大类两千多种，外形千姿百态，香气各具特点，滋味风格迥异，效能各不相同。 。 ，它是茶叶品质的综合表现。 ，它是茶叶品质的综合反映。 。 。①所谓外形是指干茶的芽叶比例，有无锋苗以及老嫩、松紧、整碎、净杂、光润、鲜暗等程度②条索紧、嫩度好、锋苗多、色泽润、是好茶；反之则劣③所谓内质，是指香气的高低、纯杂、长短，滋味的浓淡、强弱、鲜酽、苦涩，叶底的嫩度、色泽、净匀度，汤色的鲜活、明亮程度 ④不管差别多大，选择茶叶的方法是相同的，都离不开看外形、评内质⑤香气高、滋味醇、叶底匀、汤色清，是好茶；反之则劣