【单选题】Which of the following can be learned from Para.2?
A.
People over 50 spend less money on luxury items.
B.
Young people have become more economic because they earn less money.
C.
The increase of older generations has helped growth of American economy.
D.
Middle-aged or elderly models are more welcome in American commercials today.
【单选题】我国最大的“实际”,也就是我国的基本国情是( )。
【单选题】我国最大的“实际”就是中国的基本国情。这个是最大的“实际”是什么?
【单选题】Which of the following statements is TRUE according to Para. 1?
A.
Doctors know less about chronotherapeutics than before.
B.
Doctors in the U. S. used to be thirsty to know more about the new medical field.
C.
The researchers insights are providing new strategies to cure common killers.
D.
The strategic use of time in medicine attracts more attention in the medical circle in the U.S.
【单选题】下列说法中,关于Scala数据类型说法错误的是()。
D.
Nothing所有类型的子类型,也称为底部类型
【判断题】市场营销调研是企业进行市场预测和营销决策的基础。()