【简答题】There are some risks in multilateral trade.They mainly include economic risks and political risks.The economic risks include( ).
【简答题】翻译句子:横眉冷对千夫指,俯首甘为孺子牛。
【简答题】作者以"横眉冷对千夫指,俯首甘为孺子牛"总领全文,后面为什么却先写”俯首甘为孺子牛“后写”横眉冷对千夫指“,这样打破了原始的顺序有何好处?
【单选题】消化道有炎症或溃疡病人,禁忌服用水合氯醛的原因是