对肛管直肠癌有重要意义的简易方法是:
A.X线检查
B.B超检查
C.直肠指诊
D.病理组织学检查
E.纤维结肠镜检查
参考答案:C
Some people hold that, since we live in a money-oriented society, the average individual cares little about solving ______ problems.
A.anyone elses’
B.anyone’s else
C.anyone else’s
D.any one else’s
电磁波与光在真空或空气中的传播速度相同,大约是 _________ m/s,合_________km/s,这个速度是宇宙中的极限速度,用字母_________.