第一部分：阅读理解（共20小题；每小题2分，满分40分）
第一节阅读下列短文，从各篇短文后所给各题的四个选项（A、B、C和D）中，选出最佳选项。
A
My son. The phrase felt difficult and strange the first time I said it, and I had to practice it a thousand times. I started saying the words to myself the day when the ultrasound(超声波) told me we were having a baby．
Finally, my son was born.
