下列各句中，没有语病的一项是 [ ]

A．古老的智慧、经典的知识尽管难以具有实际的功效，但它们具有益人心智、怡人性情、改变气质、滋养人生的价值不可小视。

B．“机遇”号火星车对一块火星岩石的分析，科学家发现了硫酸盐等一些必须在有液态水存在的条件下才会形成的矿物质。

C．这种家酿葡萄酒有着一股浓郁的果香，口感酸甜适中，长期食用还具有一定的保健功效，深受当地人喜爱。

D．现在越来越多的商家利用节日大打价格战，在商场里，减价的标牌随处可见，三折、四折甚至五折，非常诱人。

Electronic mail and filing permit a user to compose and transmit a message on an office (71) system. In the early 1970s, the ARPANET community developed a number of such systems which have been heavily used. Through standard message format (72) , several hundred different computers and electronic mail interfaces are specification of how (73) and return addresses should appear on envelopes and which sizes are allowable for envelopes. In the electronic message world, they describe what (74) of characters are required at the (75) of a message to identify the sending and receiving mailboxes.

A．end

B．last

C．initiation

D．beginning