正确答案: B

启动因子不同

题目：内源性与外源性凝血的根本区别是( )

解析：B

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举一反三的答案和解析：

[单选题]I want to be told all __________

that had happened

解析：先行词前如有all。anythin9，everythin9等不定代词时，必须用that引导。

[单选题]根据与动机相关联的需要起源划分，成就、交往、威信、赞誉等属于

社会性动机

[单选题]曹操《短歌行》“何以解忧?唯有杜康”中的“杜康”所用的修辞方法是 （ ）

借代

[单选题]支配小腿肌前群的神经是 （ ）

腓深神经

[单选题]贝多芬的《欢乐颂》是他的《____交响曲》中的一段大合唱。 ( )

第九

[单选题]What is (21) that a teacher most wants in his students? Attentiveness? A good memory? Diligence? Certainly these are the qualities commonly (22) with "good students" in the (23) mind. And certainly, too, these are the qualities that most (24) to teachers' comfort.But the best students I ever had, (25) I remember the most wistfully, was a talkative, lazy day-dreamer. Sometimes he turned assignments in (26) , and a few he never (27) around to doing at all. Actually, my admiration for him was ironic, (28) I have never liked the name Ronald, (29) suggests to me the assumed name of a movie star. But he made one whole year of my (30) experience a delight.

it

解析：

21．答案为C  此处为强调句。It is+名词+定语从句。