A.Three
B.Four
C.Five
D.Six
A.Mark the latest homework assignment.
B.Put a cancellation notice on the classroom door.
C.Make an appointment with the doctor.
D.Return some exams to his students.
A.Because of the transform. of the traveling cars.
B.Because of the cancellation of the daffy travel mileage limit.
C.Because of the adjustment of the driving teclmique.
D.Because of the falling down of the petrol price.
With cancellation insurance, you can ______.
A.have a choice where to go and where to stay
B.get your money back when canceling your travel ticket
C.enjoy a reduced rate of travel expense
D.buy a refundable ticket at the ticket office
试在[0,1]中作一零测集Z,使得任意的f∈R([0,1])的连续点集cont(f)与Z之交集均非空集.
A.From the parents of the students.
B.From the donation of" the society.
C.From the contributions of influential people.
D.From the government.