答案：A

　　15．Mary can’t attend the party ______ at her boyfriend’s house at present because she is preparing the speech for the important meeting ______ tomorrow.

　　A．held；being held

　　B．to be held；to be held

　　C．to be held；held

　　D．being held；to be held

　　解析：考查非谓语动词作定语的情况。第一个空表示正在进行，因此用现在分词表示正在进行；第二个空表示尚未发生，因此用不定式表将来。这二者都与被修饰的名词之间是被动关系，因此都用被动结构。句意：Mary不能出席今天在她男朋友家举行的舞会，因为她在为明天那个重要的会议准备演讲稿。

　　答案：D

　　二、阅读理解

　　A

　　After two decades of steady increases，obesity rates in adults and children in the United States have remained largely unchanged during the past 12 years，a finding that suggests national efforts at promoting healthy eating and exercise are having little effect on the overweight.

　　Over all,35.7 percent of the adult population and 16.9 percent of children qualify as obese，according to data gathered by the federal Centers for Disease Control and Prevention and published online Tuesday.While it’s good news that the ranks of the obese in America are not growing，the data also point to the intractable nature of weight gain and signal that the country will be dealing with the health consequences of obesity for years to come.

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