采用缓冲技术的主要目的是( )。A．改善用户编程环境 B．提高CPU的处理速度 C

词汇运用（10分）
选词填空，根据文章内容，选用所给单词的适当形式填空。其中有两个是多余的。

oversleep，luck，buy，realize，rush，have，wait， without，embarrass，appointment，make，eat

　　I have never been so 小题1: in my life. Well, I had a doctor’s 小题2: at 10∶00 yesterday morning but my clock didn’t go off, so I 小题3: , my father 小题4: already gone into the bathroom and I had to wait for him to come out. I had to 小题5: . I ran to the bus stop 小题6: breakfast.   小题7: , the bus had left two minutes before I got there. By the time I got to the doctor’s office, it was half an hour late. The doctor had already gone to the hospital. Then I 小题8: another appointment at 1∶00 in the afternoon and went home. After 小题9: lunch I started watching TV. And then at 2∶00, I suddenly 小题10: I had forgotten the 1∶00 appointment.