【单选题】The author thinks that______.
A.
medical decisions for old people should be left to the doctors
B.
old people can enjoy a happy life only if they are very rich
C.
the opinion that we should try every means possible to save old people is doubtful
D.
it is always morally right to treat old people and push off death
【简答题】A. st or m B. doct or C. or ganization D. unf or tunately
【简答题】___is often the case with children,Tom was completely better by the time the doctor arrived.
【简答题】一个多项式加上 得到 ,则这个多项式是___________.
【简答题】将关于 的多项式 表为关于 的多项式 其中 则 .
【单选题】若多项式 与某多项式的差为 ,则这个多项式为( )
【简答题】一个多项式与 的和是 ,则这个多项式是 __ ____ .