单项选择题

Questions 14 to 17 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions.
Now, listen to the passage.
Americans ensure proper respect for the national flag by

A．making laws.
B．enforcing discipline.
C．educating the public.
D．holding ceremonies.

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单项选择题

单项选择题

Questions 14 to 17 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions. Now, listen to the passage. Americans ensure proper respect for the national flag by 您的浏览器不支持 audio 元素。