第一部分：阅读理解（共两节，满分40分）
第一节（共15小题；每小题2分，满分30分）
阅读下列短文，从每题所给的四个选项(A、B、C和D)中，选出最佳选项，并在答题卡上将该项涂黑。
A
One day Thomas Alva Edison was given a letter by his teacher. His teacher asked him to give it to his mother. Edison thought it was something nice .After he returned home, he proudly gave it to his mother, saying “My teacher let me give this letter to you.”
