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Passage OneQuestions 26 to 28 are based on the conversation you have just heard.

Arrive early for boarding.
B. Carry little baggage.
C. Undergo security checks.
D. Go through a health check.

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在面向对象方法中，一个对象请求另一个对象为其服务是通过发送【3】来完成的。

Charlie Brown is the hero in Schulz’s work, who often fails but never stops trying again.

Questions 11 to 18 are based on the conversation you have just heard.

A. Before economics.
B. In about an hour.
C. The next day.
During economics class.

近年来，沙尘暴一直困扰着人们的生活。尽管人们已经认识到这一可怕的现象，但似乎也没有什么特别有效的办法来防止它。作为一个公民，你认为哪些是防止沙尘暴的必要方法阐明原因。 Sandstorms