骨关节炎的X线片表现包括()
A.骨赘形成
B.关节间隙狭窄
C.软骨下骨有硬化
D.关节面凹凸不平
E.软骨下骨有囊性变
参考答案:A, B, C, D, E
根据句意和中文注释,写出所给单词的适当形式。
1. It is very important for children to learn to be ________(诚实的).
2. Don't leave the child ________(by oneself) near the river. It's dangerous.
3. It is a________(not useful)book.so I throw it away.
4. I couldn't ________(相信) my eyes when he came to my home.
5. The Greens will have a ________(令人愉快的) trip because they plan everything carefully.
汇率波动受黄金输送费用的限制,各国国际收支能够自动调节,这种货币制度是( )。
A.信用本位制B.金本位制C.布雷顿森林体系D.牙买加体系