槐树：植物( )
A．课本：读书
B．手枪：射击
C．老师：学生
D．核桃：坚果
参考答案：D
解析： 槐树是植物的一种，核桃是坚果的一种。
An investor buys one share of stock for $100. At the end of year one she buys three more shares at $ 89 per share. At the end of year two she sells all four shares for $ 98 each. The stock paid a dividend of $1.00 per share at the end of year one and year two. What is the investor’s time-weighted rate of return（）
A. 6.35%.
B. -2.0%.
C. 0.06%.
烫发的目的是什么？
