痄腮的好发年龄是()
A.1~3岁
B.2~4岁
C.5~7岁
D.3~5岁
E.4~6岁
参考答案:D
解析:全年皆可发病,冬春季节尤为多见。学龄期儿童发病率较高。
According to their theory, the more severe the punishment, _______________.
A.the less likely crime
B.the less likely the crime
C.the crime less likely
D.the less the likely crime
外源性支气管哮喘,浆细胞产生使人体发生变态反应的抗体是
A.IgAB.IgGC.IgED.IgME.IgD