【简答题】动态规划方法的步骤可以总结为:逆序求解 ,顺序求 、 和 。
【简答题】阅读理解。 There are many different kinds of communities around the world. Communities can be (in a city), sub (near a city), or rural (in the countryside, far from a city). communities us...
【单选题】SM communities differ from regular communities because ________.
A.
they are based on mutual interests of users
B.
they are based only on organizational boundaries
C.
most people belong to a single community
D.
the total number of its users is determined by the sum of the sizes of all its communities
【单选题】What are the important functions to both the human communities and the communities of the animal world?
A.
Creating safety and giving freedom.
B.
Having enough food and connecting each other.
C.
Sharing feelings and enjoying within the communities.
【单选题】According to the speaker,what kind of communities do senior citizens prefer?
A.
Communities near their family.
B.
Communities in big cities.
C.
Communities in warm climates.
D.
Communities in the countryside.