阅读理解，根据短文选择正确的一项

    One day a policeman was walking in the park. He saw a man there. The man was holding a penguin（领着一个企鹅）. The man said to the policeman, “ I found this penguin this morning. What shall I do with it?”“Take it to the zoo,” said the policeman. The next day the policeman saw the man again. He was still holding the penguin. The policeman said, “Why didn't you take the penguin to the zoo?”“I did,” said the man. “I took him to the zoo yesterday. Today I'm taking him to the cinema.

比3.92多0.4的数是____，比4.93少1.5的数是____。

如图是血涂片在显微镜下的一个视野图．

（1）当人被细菌感染而发炎时，图中____ 的细胞数目会显著增加．

（2）当我们不慎摔倒使手掌皮肤出血，过一段时间皮肤表面就结了血痂，是因为图中____ ____具有止血和加速凝血功能．

（3）当图中____ 数量过少或其中血红蛋白含量过低时，会造成____ ，应多吃一些含蛋白和含____ 的食物．

（4）某病人必须进行大量输血抢救的时候，应以输____ 血为原则，否则，若血型不对，会使受血者体内的A____ 凝聚成团阻碍血液循环造成危险．

下列事例应用了“流体压强与流速的关系”的是（　　）