一长方体铁块按如图甲所示，从下表面与液面刚刚接触处放置图中虚线位置。能大致反映铁块下降过程中所受浮力的大小F_浮与铁块下表面浸入液体深度h_深关系的图像是（   ）

根据材料内容，选择正确答案。

    Do you know fish come out of eggs when they are born? After the little fish comes out of the egg, it eats the food in the egg. When it is big, it leaves the egg. It swims in the water. You can see the eyes and nose. Its ears are hidden in the head.

    Spree fish eat other fish. Some fish have small mouths and teeth and they often eat plants.

一提起玄奘法师，一般人们都会想到《西游记》中那位胆怯懦弱、人妖不分、是非难辨的糊涂和尚。然而史实记载的玄奘法师与鉴真却存在很多相同之处(   )

①都为唐朝的对外交往做出重要贡献

②都为完成使命历尽艰难困苦

③都具有顽强不屈的毅力、百折不挠的精神

④都在贞观年间出国