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问题 选择题

—Hi, guys. Where are you heading now?

—Home. We _______ all our money, so we have to walk home now.[ ]

A. spend

B. spent

C. have spent

D. are spending

答案

答案：C

多项选择题

继发性肺结核的病理特点有______

A．多局限于肺内

B．多从右肺尖开始

C．病变新旧不一

D．病变上重下轻
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单项选择题

A company is determining the cost of debt to use in its weighted average cost of capital. It has recently issued a 10-year, 6 percent semiannual coupon bond for $ 864. The bond has a maturity value of $1 000. If the marginal tax rate is 35 percent, the cost of debt they should use in their calculation is closest to:（）

A. 4.3%.

B. 5.2%.

C. 6.1%.
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