Everyone, including her parents, _______ the Wolf Hill, and they will be back this afternoon.

A．has gone to

B．have gone to

C．has been to

D．have been to

患儿男，8个月。牛奶喂养，腹泻2天，黄色稀便，每天4～5次，今开始尿少。体检：心、肺无异常，口腔黏膜略干。错误的治疗方法是（）

A.口服补液

B.口服益生菌

C.口服蒙脱石散

D.口服助消化药

E.口服抑制肠蠕动药物