A. perceived B. spotted C. detected D. discerned 参考答案:C 答案解析:题意为:她发现自己的饮用水铅含量很高。 此题考查动词近义词辨析。detect意思是“发觉,发现,侦查。探测,检定(往往借助某种仪器)”。perceive意思是“获得对…的理解,意识到”,
第29题: [单项选择]Although Todd gets more vacation leave than Anna, his annual salary is not as high as ______ . A. she B. her C. hers D. herself 参考答案:C 答案解析:从句意来看必须填入指代her annual salary的代词。因此正确答案是(C)选项hers。