直肠息肉中,不会癌变的息肉为()
A.直肠腺瘤
B.儿童型息肉
C.息肉病
D.炎症性息肉
E.绒毛状腺瘤
参考答案:B
解析:儿童型息肉系炎症和腺体阻塞滞留所致,常会自行脱落,不会癌变。
— How much are the two pairs of trousers?
— They are not expensive. I think one hundred dollars ______ enough.
A.is
B.are
C.were
D.was
5,8,17,24,37,______。
A.48 B.49C.63 D.80