人类学家研究证明，人类与哺乳动物中的类人猿是近亲，下列类人猿与人的亲缘关系最近的是 [ ]
A．猩猩
B．大猩猩
C．黑猩猩
D．狒狒
答案：C
When an economy is in an economic expansion, automatic stabilizers will tend to alter government spending and taxation so as to:（）
A. ensure that the budget will remain in balance.
B. reduce the budget deficit (or increase the surplus).
C. enlarge the budget deficit (or reduce the surplus).
系统实时性指标主要包括哪些？
