根据疾病自然史的不同阶段,第三级预防有可称为
A.临床期预防
B.临床前期预防
C.病因预防
D.症状明显期预防
E.发病早期预防
参考答案:A
Amy insists that she ____ the secret to lose weight. But she won’t share it with us.
A.had discovered
B.discovers
C.has discovered
D.will discover
概述资料2~3提供的主要信息。要求:概括全面,表述简洁,字数不超过 300字。