利用刀具半径补偿可以（）。
A.简化编程
B.使编程复杂
C.不用编程
D.进行任意编程
参考答案：A
—Does your brother serve in the army?
—No, not now. But he _____ in the army for 8 years.[ ]
A. would serve
B. was serving
C. had served
D. served
买入并持有资产配置策略的投资者通常重视市场的短期波动，着眼于短期投资。（）
