Which of the following can best serve as the title of the passage？

A．A Possible Approach to Checking Heart Disease

B．The Risk of Heart Disease

C．The Relation Between Weight and Blood Pressure

D．How to Improve Your Heart Health

自美军在越战中大量使用脱叶剂(橙剂)造成二噁英污染，到1999年比利时等国发生"毒鸡"事件，世界上屡次发生与二噁英有关的污染事故，使得二噁英污染和防治成为各国关注的环境热点之一。造成环境污染的二噁英是一种A、重金属

B、颗粒物

C、多环芳烃

D、有机氯化合物

E、氮氧化物

大气环境中的二嚼英主要来源于A、火山爆发

B、森林火灾

C、城市垃圾焚烧

D、工厂排放废气

E、汽车尾气

下列关于二噁英的危害，说法错误的是A、干扰机体内分泌

B、免疫毒性

C、刺激上呼吸道

D、皮肤损害

E、致癌作用

大量咯血指的是

A、每日咯血量100ml

B、每日咯血量200ml

C、每日咯血量300ml

D、每日咯血量在500ml以上

E、一次咯血量100ml

It can be inferred from Paragraph 4 that______.

A．golf and photography skills don"t fit children

B．there must be a tournament for the skill you teach

C．getting ready to share is the basis of helping children

D．traditional sports are neglected by the children now

"密封发酵法"进行粪便无害化处理时，杀死病原菌与寄生虫卵的主要因素时

A、高温

B、缺氧

C、氨气

D、缺乏营养物质

E、生物拮抗作用

Whats the authors attitude towards eating fruit in the last paragraph？

A．People shouldn"t eat fruit.

B．People should eat less fruit.

C．People may eat more fruit.

D．People should eat fruit in moderation.