单选题 (单选题)The country's economy ______ into chaos following the sudden outbreak of the war.

单选题 (单选题)In many countries, attending primary school is ___________ for children, as it lays the foundation for their future education and development.

单选题 (单选题)The Qing Dynasty's _______ world was forced open by the Western powers' gunboat diplomacy in the 1800s.

单选题 (单选题) ——improvement of service requires continual learning so everyone may serve others better every day.

单选题

6. (单选题)Great works of art often ________ the boundaries of time and culture, speaking to audiences across centuries and continents.

单选题 (单选题)To ________ the patient's pain, the doctor prescribed a stronger medication.

单选题 (单选题)A good detective must be highly ______, noticing even the smallest details at a crime scene that others might overlook.

单选题 (单选题)The building’s first floor was made up of black, glass that didn’t allow passers-by to see into the building.