单项选择题In order to improve our standard of living, we have to accelerate production.
单项选择题An important part of the national government is the Foreign Service, a branch of the Department of State.
单项选择题The poet William Carlos Williams was a New Jersey physician.
单项选择题The child's abnormal behavior puzzled the doctor.
单项选择题Many fine cooks insist on ingredients of the highest quality.