【单选题】—Would you like to go hiking with us this Sunday? —Sure, _______ I am busy.
【判断题】It is illegal for U.S. citizens to pay bribe unless it is a common practice in the host country.
【简答题】The gray-haired lady can’t wait to leave the building to search for her dad. Unless watched, she will walk in the streets in an effort to find her father, who died 30 years ago. Not all cases of Alzhe...
【单选题】下列指示剂变色范围(pH值)为3.1~4.4的是()。
【简答题】西南旅游区的()和()因位置偏僻,山深林密,人类活动少,自然环境的原始状态破坏较轻,因而被称为“仙境”“童话世界”
【判断题】国际标准化委员会(ISO)成立于1947年。( )
【判断题】国际标准化组织(InternationalOrganizationforStandardization,缩写ISO)成立于1947年2月23日。