考博考试

试题来源：考博英语-24
【单选题】 In the first sentence, "to become commercially available" means ______.
A．this procedure is available only on the market
B．this procedure can be used in producing better farm animals
C．This procedure can be used to promote business
D．People such as farmers can use this procedure in their production

参考答案：D
网考网解析：
在商业上实际可用。 ... 查看试题解析出处>>