慢性脊髓压迫症的临床表现分为哪几期（）
A.刺激期
B.进展期
C.脊髓部位受压期
D.恢复期
E.脊髓完全横贯损害
参考答案：A, C, E
间接接触电击是由于电气设备绝缘损坏发生接地故障，设备金属外壳及接地点周围出现对地电压引起的。
用所给词的适当形式填空。
1. Today is June 1st, it's ______ ( child ) Day.
2. Lily with her brother ______ (have) to clean their garden.
3. We have fun ______ (talk).
4. Listen! Can you hear somebody ______ (cry) ?
5. Mr. Black, ______ (arrive) tomorrow.
