使用ping命令ping另一台主机，就算收到正确的应答，可以说明目的主机可达
参考答案：对
Sarah felt like when she found out that she had been chatting online with a boy student of her same class.
A．cry
B．to cry
C．being crying
D．crying
赵某对钱某擅自出卖古董之行为，可提出何种之诉
