In the following essay, each blank has four choices. Choose the most suitable one from the four choices and write down in the answer sheet. There are two types of key technology: private key and public key. Private - key encryption methods are called (66) ciphers, information is encrypted with (67) both the sender and receiver hold privately. Public - key encryption methods are called (68) ciphers, (69) created for each user, encryption key and decryption key ale (70) .

A．same

B．different

C．difference

D．some

患儿生后7天，在家接生，出现发热，烦躁不安，吸吮困难，苦笑面容，阵发性痉挛、惊厥，脐部发红。

控制惊厥首选的镇静剂为

A．地西泮

B．氯丙嗪

C．苯妥英钠

D．苯巴比妥

E．水合氯醛