心绞痛的牵涉痛表现为（）.

A.剑突下痛

B.胸骨体中段痛

C.左前臂内侧痛

D.胸骨体上段之后痛

E.心前区痛

用所给单词的适当形式填空。

1. My mother is used to              (go) shopping on Sundays.

2. They go out of their way to make me ____      (feel) at home.

3.I find it difficult              (understand) everything.

4. His bike is              (difference) from mine.

5. There is no reason___         (come) to school late today.