— Simon, I wonder ________.

　 — Last Saturday.

A．when did the foreign visitors arrive

B．when the foreign visitors arrived

C．when the foreign visitors will arrive

D．when will the foreign visitors arrive

轻度等渗脱水()
中度高渗脱水()
重度低渗脱水()
中度等渗脱水()

A．失水量为体重的3～5%，血钠140mmol/L

B．失水量为体重的5%～10%，血钠135mmol/L

C．失水量为体重的10%以上，血钠138mmol/L

D．失水量为体重的10%以上，血钠129mmol/L

E．失水量为体重的5%～10%，血钠151mmol/L