第一节
听下面5段对话。每段对话后有一道小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。
听力原文：W: Is your computer class very crowded？
M: Well, on the first day there were 45 students in class, and the next day 14 more students came.
How many students are there in the computer class？

A. 69.
B. 67.
C. 59.