一个两位数，十位上的数字是个位上数字的2倍，如果把个位上的数与十位上的数对调得到

蔬菜中耐藏性最强的是（）。

A、果菜类

B、叶菜类

C、根菜类、茎菜类

D、花菜类

棘球蚴病主要分布在（）

A.长江以北

B.长江以南

C.西北牧区

D.山区

E.全国各地

离子交换层析的常用介质是（）。

A.聚丙烯酰胺

B.琼脂糖

C.琼脂糖-聚丙烯酰胺

D.葡聚糖

E.纤维素

阅读下面短文，回答下列问题。
每月有六至九天专门受理民事诉讼，当然农忙季节——即自四月一日到七月三十日——除外(在此期间，凡涉及户婚、田土及各类轻微之事的争讼概不受理)。州县官在每月将定的这几天里必须亲自坐堂接受人们的控告。他的第一个步骤是通过当堂质问决定控告是当受理还是当驳回。在诉状的末尾写上一个“批”词，或宣布受理，或说明不受理的理由。
写批词的方式，人各有异。一些精明能干的州县官一收到诉状就在原告面前挥毫立就写出批词或与幕友讨论后亲自写批，因而闻名遐迩。有些州县官虽然并不亲自写批词，但喜欢与幕友们讨论案子并发表自己的见解。然而，大多数州县官并不熟悉法律，也无能力写批词，因而只得求幕友代为作批。方大冢忠告，只有经验丰富的州县官才可试试当庭作批词；因为缺乏经验的官员所作的批词或许无法使人信服，甚至是荒谬的。
法律规定，属州县司法管辖的民事案件必须在二十日内审结。然而，因为拖延审判并没有刑责，许多州县官无视这一期限。对州县官的这类抱怨经常可见。
(摘自瞿同祖《清代地方政府》，范忠信、晏锋译，法律出版社，2003)

在实践中，批词主要由谁撰写

A．州官

B．县官

C．幕友

D．衙役

WWW is popular for its multimedia transmission and friendly (71) . Although the speed of network has been improved considerably in recent years, the rapid (72) of using the Internet, the inherited character of delay in the network and the Request/Response working mode of WWW still make the Internet traffic very (73) and give no guarantee on the Quality of Service. Because HTTP has no states, the web server cannot know the users’ demand and the users’ requests cannot be predicted Taking advantage of a cache mechanism and the time locality of WWW accesses, the browser can preserve the documents ever accessed in the local machine. By this means, for the documents in the local cache, the browser does not need to send the requests to the remote server or to receive the whole responses from the remote one Pre-fetching uses the space locality of accesses First, the users’ access requests are predicted according to the users’ current request. Secondly, the expected pages are fetched into the local cache when the user is brow sing the current page. Finally, the users can access these pages downloaded from the local cache. And this can reduce the access delay to some degrees. Pre-fetching is one kind of active caches that can cache the pages which are still not requested by the user. The application of pre-fetching technology in the web can greatly reduce the waiting time after users have sent their requests. This paper brings forward an intelligent technique of web pre-fetching, which can speed up fetching web pages. In this technique, we use a simplified WWW data model to represent the data in the cache of web browser to mine the association rules. We store these rules in a knowledge base so as to (74) the user’s actions. In the client sides, the agents are responsible for mining the users’ interest and pre-fetching the web pages, which are based on the interest association repository. Therefore it is (75) for the users to speed up the browsing.

（71）处填（）。

A．interactive

B．interaction

C．interactivity

D．infection