问题
单项选择题
常用的光导纤维横截面为（）
A、六角型
B、八角型
C、多边型
D、圆形
答案
参考答案：D
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常用的光导纤维横截面为（）
A、六角型
B、八角型
C、多边型
D、圆形
参考答案：D
完形填空 The telephone rings and Sue answers it. “ 1 I speak to Mrs Potts, please?” a man asks. “I’m afraid you’ve got the wrong 2 ,” Sue says. “I’m sorry,” the man says. A few minutes later the telephone rings 3 . Sue 4 it. It is the same man. He makes a mistake again. Three minutes 5 the telephone rings once more, but she 6 answer it this time, It rings and rings. Her mother hears the 7 . “Why 8 you answer the phone, Sue? she calls. “Oh, all right,” Sue says. “I’m sure it’s that man again.” But she is 9 . It is her father and he is very 10 . Sue keeps him waiting.
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