A．Because the pregnant participants were not from the areas polluted seriously.

　　B．Because about seventy percent of young kids suffered from serious asthma attacks.

　　C．Because Perth's traffic pollution was increasing quickly.

　　D．Because the pregnant participants all lived in the heavily polluted areas.

　　解析　该题考查细节的推断。Pereira(佩雷拉)对目前实验结果感到意外，原因是他的实验对象不是来自污染很严重的地区。关键信息词在第三段第二句：findings from that latest study were very surprising for him because the pregnant women who took part in the study did not live in heavily polluted neighborhoods。

　　答案　A

　　B

　　Spain is always related with bold and unrestrained character.Barcelona，a beautiful city of Spain，is the most famous city in Spain.

　　Compared with Madrid，the capital of Spain，Barcelona has a much longer history，In the 8th century，Moors conquered Spain.Barcelona acted as the focal point for the exchange of scholar and scientific knowledge between the European and Muslim world.Before the 16th century，it was the center of Spain.In 1493，the monarch(王室)received Columbus in the Royal Palace in Barcelona.In the 16th century，Spain stepped into its golden age.The Monarch made Madrid，which is in the center of Spain，the capital of Spain.

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