单项选择题A.There is a sign of green hand inside the car.B.There are two sets of brakes inside the car.C.It is only big enough to hold 3 persons.D.It can’t run very fast no matter how you drive.
单项选择题A.Because it gives people a sense of achievement.B.Because most people like doing it every day.C.Because it is neither biochemical nor poisonous.D.Because it increases the heart rate and circulation.