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。
用所给单词正确形式填空。
1. —Would you like _____ (see) the film with me?
—Sorry, I don't have time.
2. Thank you for _____ (organize) the class trip for us.
3. Wednesday _____ (come) after Tuesday.
4. Tom, _____ (not listen) to music now, please.
5. What _____ people in the west _____ (eat) at Halloween?
假设华蓥人民广播电台的发射频率是880kHz,播音员王小波的发音频率是0.5kHz,当你用收音机收听华蓥人民广播电台的节目时,调谐器应调的频率是[ ]
A.880kHz
B.0.5kHz
C.880.5kHz
D.779.5kHz