卵巢粘液性囊腺瘤声像图特点,下述哪一项错误
A.囊腔内较多分隔
B.肿瘤体积增大
C.无回声区内有细小点状回声
D.囊内无分隔
E.少数有 * * 生长
参考答案:D
—What was wrong with you yesterday evening?
—I ________ my homework when the light went off suddenly. [ ]
A. doing
B. was doing
C. did
D. have done
引起我国婴幼儿秋冬季流行性腹泻的病毒主要是()
A.肠道病毒70型
B.埃可病毒
C.柯萨奇病毒
D.巨细胞病毒
E.轮状病毒