题目内容

19-21 Questions 19 to 21 are based on the conversation you just heard.
第19题：

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A．providing B．offering C．supplying D．asking

A. providing
B. offering
C. supplying
D. asking

22-25 Questions 22 to 25 are based on the conversation you just heard.
第22题：

有一串彩旗，▼代表蓝色，▽代表黄色。两种彩旗排成一行如下所示：
▽▼▽▼▼▽▼▼▼▽▼▽▼▼▽▼▼▼▽▼▽▼▼▽▼▼▼…
那么在前200个彩旗中有（）个黄旗。

A. ate B. ran C. slept D. awoke