VOA慢速英语:Study Ties Some Pesticides to Risk of ADHD in Children

例句：He is overly worried about his health;his doctor said he is very healthy.
      他对自己的身体过度担忧, 而医生说他很健康。

2.exposure n.暴露, 显露

例句：After only a short exposure to sunlight he began to turn red.
      他在阳光下只晒了一会儿, 皮肤就开始变红了。

3.hyperactivity n.活动过度,极度活跃

hyper-表示“超过，太多”

hyperactive活动过度的（hyper+active活动的）

hypersensitive过敏的（hyper+sensitive敏感的）

hypercritical吹毛求疵的（hyper+critical批评的）

hyperbole夸张法（hyper+bole抛→活抛得高→夸张）

hypertension过度紧张；高血压（hyper+tension紧张）

4.deficit n.不足额，缺款额，缺少

例句：We raised ￡100, and we need ￡200; that's a deficit of ￡100.
      我们筹措了100英镑, 而我们需要200英镑, 还缺100英镑。

赤字, 亏空, 亏损，逆差

例句：The directors have reported a deficit of 2.5 million dollars.
      董事们报告赤字为250万美元。

5.identify vt.认出, 识别

例句：Would you be able to identify the man who robbed you?
      你能够认出那个抢你东西的人吗?

      She learned how to identify medicinal herbs from a traditional Chinese doctor.
      她向一位中医大夫学习如何识别草药。

6.measurable adj.可量度的, 可测量的, 可衡量的，明显的;重大的

例句：There’s been a measureable improvement in his work.
      他的工作已有很大改进。

7.register vt.vi.记录; 登记; 注册

例句：An increasing number of students are registering for degree courses each year.
      每年, 越来越多的学生注册学习学位课程。

      How many members have officially registered in the club?
      该俱乐部正式登记的会员有多少?

8.poison vt.毒死, 毒杀

例句：The explosion of the chemical plant has poisoned many local residents.
      那座化工厂的爆炸毒死了许多当地居民。

9.evidence n.证词; 证据; 迹象

例句：A scientist must produce evidence in support of a theory.
      科学家必须提供证据以支持其理论。

      The room bore evidence of a struggle.
      这房间里有搏斗过的迹象。