单项选择题
A.It doesn’t need to be refueled. B.It will use solar energy as fuel. C.It will be driven by electrical power. D.It will be more suitable for long distance travel.
A.They will be much bigger. B.They will have more seats. C.They will have three wheels. D.They will need intelligent drivers.
A.The admission of a patient. B.Diagnosis of an illness. C.The old man’s serious condition. D.Sending for a doctor.