单项选择题What does the phrase litters of pups mean in the second paragraph()
A.Baby rats. B.Animals. C.Old rats. D.Grown-up rats.
单项选择题The writer chiefly talks about ().
A.the use of telemedicine B.the on-lined doctors C.medical care and treatment D.communication improvement
单项选择题What is the best title for this newspaper article()
A.The Story of Mr. Johnson, A Sweet Salesman B.Car Boot Can Serve As The Best Escape Route C.Driver Escapes Through Car Boot D.The Driver Survived A Terrible Car Accident
单项选择题第(1)空应选择()
A.dream B.difficult C.exciting D.heavy
单项选择题How do scientists know motherhood may make women smarter ()
A.Some researchers have told them. B.Many women say so. C.They know it by experimenting on rats. D.They know it through their own experienc