根据提示补全下列教材原句

　　1．He is always working in his lab，trying to figure out all the mysteries that make him puzzled.他总是在实验室里工作，努力弄明白困惑他的所有奥秘。

　　2．He must have been working too hard to notice!

　　他当时肯定是工作太努力而没有注意到！

　　3．The boy was more frightened than hurt.

　　这个男孩与其说受伤不如说是害怕。

　　4．At the top of the school is the headmaster，known as the brain.

　　高居学校顶部的是校长，就是众所周知的大脑。

　　 be aware of 意识到；觉察到

　　(教材P46)They are hardly aware of the uncertain effects of cloning humans.

　　他们几乎没有意识到克隆人类造成的不确定的影响。

　　(1)become/get aware of 意识到；觉察到

　　make sb.aware of 使某人意识到

　　be aware that/wh­clause 知道......；意识到......

　　(2)awareness of 意识到

　　①I didn't become aware of his arrival.

　　我没注意到他的到来。

　　②I'm (well) aware that very few jobs are available.

　　我(很)清楚工作职位非常少。

　　 turn out结果是；证明是；原来是；出席；露面；集合；在场

　　(教材P46)It could turn out to be a monster!

结果它可能会成为一个怪物！