单项选择题

In the figure below, vertex Q of square OPQR is on a circle with center O. If the area of the square is 8, what is the area of the circle（）

A.A
B.B
C.C
D.D
E.E

<上一题目录下一题>

热门试题

单项选择题

In the figure below, if the radius of circle O is 10, what is the length of diagonal AC of rectangle OABC （）

A.A
B.B
C.C
D.D
E.E

单项选择题

Which of the following statements would be most likely to begin the paragraph immediately following the passage？（）

A、 Union demands may also have an effect on business cycles.
B、 Some industries are, by their very nature, cyclical, having regular phases of expansion and recession.
C、 Information is a factor that must be taken into consideration in any discussion of the expansion phase.
D、 The farmer’s role during the expansion phase is of vital importance.
E、 The other phase of the business cycle is called the recession phase.