骨巨细胞瘤的好发年龄是
A. 5~9岁
B. 10一19岁
C. 20~40岁
D. 41—60岁
E. 61—80岁
The performances in relation to Whorf's claim or the Dani and the Piraha are
A. complementary
B. identical
C. similar
D. opposite
房地产开发过程中需要两类资金,即建设贷款和短期资金。
A. 正确
B. 错误
What does the word "they" (Para. 4) refer toy ______.
A. organized gangs.
B. PCs infected.
C. copies of the virus.
D. their files.