肺癌治疗方法的选择是
A．腺癌首选放疗
B．鳞癌首选放疗
C．小细胞肺癌首选手术
D．鳞癌首选化疗
E．小细胞未分化癌首选化疗和放疗
参考答案：E
根据所给信息补全对话，每空一词。
Mary: Hi, Betty, can you come to my l. _______2. _______?
Betty: Sure. I'd 3. _______ 4. _______ 5. _______ 6_______ is it?
Mary: It's at 7. _______ on 8. _______
Betty: But where is it?
Mary: In 9. _______ house,4 New Street.
Betty: OK. I'm 10. _______soon.
已知数列{an}的前n项的和Sn=1-m2an，则此数列是( )．
A．以为首项，公差为的等差数列
B．以为首项，公比为的等比数列
C．以为首项，公差为的等差数列
D．以为首项，公比为的等比数列
E．既非等差数列，亦非等比数列
