18．A.normal

　　B．strange

　　C．special

　　D．boring

　　答案：A'参见上题解析。

　　19．A.trains

　　B．apartments

　　C．troubles

　　D．opportunities

　　答案：D'总有很多的机会(opportunities)，只要你愿意，下一个冒险(adventure)就会等着你。

　　20．A.trip

　　B．story

　　C．project

　　D．adventure

　　答案：D'参见上题解析。

　　Ⅱ.阅读理解(建议用时15′)

　　A

　　Since the beginning of the year, smog (雾霾) has covered parts of North China. In January, Beijing saw only five days without smog. The rising PM2.5 readings terrified many people, and some health experts said that whenever the smog gets serious, hospitals receive more patients suffering acute respiratory (呼吸系统) and heart diseases.

　　Later, news of polluted underground water in some provinces scared people who wondered whether the water they drink is safe.

　　So the need to emphasize

　　environmental protection while developing the economy is heard everywhere.

　　Smog is especially a common concern. As a popular online post said, air may be the only thing that is equal for everyone, despite

　　your income or profession. People with higher incomes are able to drink only bottled spring water and eat only organic food by paying higher prices, but they breathe the same air as everyone else.

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