北半球(除孟加拉湾和阿拉伯海)热带气旋发生最多的月份是()。
A.6~9月
B.7~10月
C.5~9月
D.5~10月
参考答案:B
骨肉瘤的基本X线表现为()
A.肿瘤钙化
B.骨质破坏
C.骨膜反应
D.软组织肿块
E.肿瘤新生骨
Human beings are superior to animals that they can use language as a tool of communication.
A.in that
B.in which
C.for that
D.for which