冠心病的分型有

A．心肌梗死型

B．心律失常型

C．不稳定型

D．心绞痛型

E．猝死型

在下列各句的空格内填上一个适当的单词，该词的首字母已给出。

1. I can't hear you. Can you read it a_______?

2. If you work hard, you will s________ in the end.

3. His mother often teaches him the i________ of working hard.

4. Peter f______ his math test last time. He was sad.

5. Though he is much too s_______, he tries his best to keep awake.