Fire protection and manning regulations for towing vessels state that the Master or person in charge must ensure that all crew members who have not participated in the drills or received the safety orientation（）.

Children who are not active or ___diet is high in fat will gain weight quickly.

Who are happier, modern people or people in the past?  

1987年WHO判断沙眼的体征有（）

WHO诊断沙眼的标准。

Brokers are those people, according to the passage, who buy or sell business shares for others.

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

Who do you like better, your father or mother? Why?

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

WHO确定的龋病诊断标准是

假如某因素与某病关系的病例对照研究结果的OR值为0.3（P＜0.01），最可能的解释是（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。