45的分子加上20，要使分数的大小不变，分母应加上______．

请根据网页显示效果图的网页中的元素说明，将HTML文本中上处的解答填入对应的解答栏内。
[说明]
下图是一个关于Sony公司2006年两款DV产品性能比较的页面。

[上图网页中的元素说明]

序号	类型	说明
(1)	网页标题	“2006索尼新品摄像机”
(2)	表格标题	加粗显示”2006年索尼两款新品DV比较“
(3)	超级链接	链接文本“DCR-HC46E”链接目标："http://www.sony.com.cn/handycam2006/738.htm"
(4)	水平线	大小为1
(5)	图片对象	图片名称：HC3E.jpg,替代属性：H3E width、183 height、113

[HTML文本]
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＜head＞
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(1)
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.txt
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＜tr＞＜tdwidth="234"height="20"class="txt"＞摄像机类型:Mini DV＜/td＞ ＜/tr＞
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＜a href="http://www.sony.com.cn/handycam2006/762.htm”＞DCR-HC3E＜/a＞
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GIS超高频局部放电检测中对干扰信号的判别可综合利用（）、（）、（）等仪器和手段进行。

A.超高频法典型干扰图谱

B.频谱仪

C.频响仪

D.高速示波器

E.低速示波器

复合肥料

Every object tells a story. Even the most ordinary objects can present to us powerful images. Sometimes it is the ordinary nature of these objects that actually makes them so extraordinary. Such is the case with an old leather shoe in a museum in Alaska. At first glance it does not look like much. It is a woman’s shoe of a style popular in the 1890s. But what is unique about this shoe is where it was found. It was discovered on the Checkout Pass, the famous trail used by the people seeking gold in Alaska. Who it belonged to or why it was left there is not known. Was it perhaps dropped by accident as the woman climbed up the 1500 stairs carved outface Or did she throw away goods that she didn’t need in order to travel lighter
Over 100000 people with "gold fever" made this trip hoping to become millionaires. Few of them understood that on their way they would have to cross a harsh wildness. Unprepared for such a dangerous journey, many died of starvation and exposure to the cold weather.
The Canadian government finally started requiring the gold seekers to bring one ton of supplies with them. This was thought to be enough for a person to survive for one year. They would carry their supplies in backpacks each weighing up to fifty pounds; it usually took at least 40 trips to get everything to the top and over the pass. Whoever dropped the shoe must have been a brave and determined woman. Perhaps she was successful and made it to Alaska. Perhaps she had to turn back in defeat. No one will ever know for sure, but what we do know is that she took part in one of the greatest adventures in the 19th century.

No matter what happened to the woman who owned the shoe, ______.

A. she must have lived a happy life
B. she certainly dropped the shoe on purpose
C. her adventurous spirit is definitely admired
D. her other shoes were equally fashionable

周某于2004年7月某晚将一名女青年骗到家中，将其强 * * 后杀害。周某的父母亲发现这一情况后，马上动员周某去公安局自首，周某不肯去。于是周父在家看好周某，周母去公安局报告。到了公安局，周母恰遇在公安局任副局长的亲戚田某，周母即把情况向田某说明。田某说：“杀人要偿命，自首也要坐一辈子牢，不如逃掉，逃过20年就没事了。把我的车开去，赶紧开我的车送他逃走。”周母听了田某的话就打消了自首的念头，开上田某的车回家送周某逃路。田某的行为构成( )。

A．徇私舞弊不移交刑事案件罪

B．窝藏罪

C．徇私枉法罪

D．帮助犯罪分子逃避处罚罪