A．velocitiesB．impulsesC．ratiosD．atrocitiesNerve signals……

单项选择题Our plan is to allocate one member of staff to handle appointments.

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.