All their attempts to rescue the child from the burning building were__A.in vain B.for C.in return D.in place我选A,正确答案是B.why?All their attempts to rescue the child from the burning building were__ .He dies soon afterwards.A.in vain B.for C.in return D.in place我选A，why?
小百wan1170
额,难道只有一个for么.个人觉得选A 啊
为您推荐：
其他类似问题
扫描下载二维码求老师解答：—Where're the child
—Where're the children,Mr Black?—Oh,they _______ their PE lesson on the playground.
A.have B.had C.are having D.have had
我是你0爸289
为您推荐：
其他类似问题
扫描下载二维码Parents being slaves to the children为题的英语作文
　The relationships between parents and children are becoming strange and complex because many parents are being slaves to their children,they spend almost all of their lifetime cultivating their children from little kids to teenagers and even when their children grow up and get married,these parents are still at service.　　In china,the one-child policy is widespread and each family just has only one child,so when the baby is born,he or she becomes the apple of parents’ eyes.Then parents are trying their best to give their little kid the most comfortable living condition and expensive toys,maybe their kids just want to compete with each other,but parents will do anything they can to satisfy child’s needs.This certainly leads to parents’ struggle to make as much money as possible.I think it’s more accurate to say that parents are being slaves to children than being slaves to money.　　Parents will feel more strain when their little kid turns teenager.At this point,it’s more evident to see parents becoming slaves,especially on college enrollment day.We are always seeing that parents are loaded down with heavy luggage,while their child is just holding cell phone and walking casually.I’m sorry to see that.As college students,it’s necessary to prove self-reliance as grown-ups,however,many students fail to do that.Parents not only have to arrange their child’s daily life,they are also expected to take responsibility for the high tuition fee.Absolutely,you can blame that parents dote too much on their child,but they actually become “child slave” unconsciously.　　As children grow up and get married,their parents also become old and frail,but they haven’t loaded their responsibilities down.They give financial support to their child to afford a house and become the baby-sitter when their child gives birth to a pretty baby.These parents would suffer from huge economic and physical pressure.What’s worse,their child takes it for granted.　　Parents struggle their whole life for child,and devote themselves to fostering child,so unfortunately,they become the salves to their child.
为您推荐：
其他类似问题
Nowadays the problem of parents being salves to the children has become a matter of great concern for the general public in the modern society.With the growth of children, the parents are willing to d...
扫描下载二维码该账号邮箱未验证，请后登录
请输入正确的密码!
记住登录状态
使用合作网站帐号登录 :
在线时间605 小时经验值2627 小站金币133 最后登录注册时间主题精华0阅读权限30帖子
讲师, 积分 2627, 距离下一级还需 1874 积分
小站金币133
20小站金币
本帖最后由 liuya6132659 于
15:06 编辑
Currently, there is a widespread belief that parents in modern society have a better understanding of their children, while, most of the time, children in modern society gain more attention but less understanding from their parents.
Admittedly, modern technology provides parents with more approaches to communicate with their children. Various online chatting tools, such as QQ, MSN, Wechat and Microblog, can help parents to communicate with their children easily, making them to know their children's life better. However, the advance of modern society impedes the effective communication between parents and children. In fact, parents today know less about their children than parents 50 years ago due to the enlarged generation gap and busy work.
In the first place, children in modern society become more difficult to understand than 50 years ago. The generation gap becomes huger between parents and children in modern society, because children acquire a lot more new information and ideas from various resources, such as mass media and the Internet. However, these ideas cannot be accepted by their parents, who always have a stereotyped mind and are reluctant to take novel concepts. For example, children may browse the Internet for some useful information when doing their homework. However, such an approach may be regarded as something related to “play” in the eyes of the parents, for they will argue that if any information is needed, children should turn to books rather than the computers: such machines in their eyes are equal to game creators. In this case, misunderstanding appears and there may follow quarrels, which will impede the mutual understanding of parents and children. By contrast, parents in the past were not bothered by such problems since there were no such advanced technological inventions. Therefore, parents may find it harder to understand their kids in modern society.
Furthermore, heavy workload in modern society may lessen the opportunity for parents to have a better understanding of their kids. Due to the quickening pace of modern life, the fierce competition forces people to devote much more time and energy than before to their work. Consequently, parents may spare less time to communicate with their children despite the various chatting tools mentioned before. On the contrary, parents who lived 50 years ago were not so engaged in their work and thus spent more time with their kids. Therefore, it is conceivable that parents in the past understood their children better than parents in modern society. According to the latest survey conducted by Peking University among most teenagers in several major cities, parents spend less than 6 hours with their kids per week, and most time is spent during the dinner. Those teenagers complain that they try to communicate with their parents and are eager to get s however, it is always futile to do so. Lacking communication between parents and children may worsen the situation about the mutual understanding.&&
In conclusion, while modern society offers parents more means to get in touch with their children, parents actually have less understanding of their kids than 50 years ago due to the enlarged generation gap and the busy work.
相关帖子 |
杀T考G屠鸭，一切尽在TPO小站论坛！
在线时间52 小时经验值212 小站金币0 最后登录注册时间主题精华0阅读权限0帖子
该用户从未签到排名
在线时间1455 小时经验值11037 小站金币10823 最后登录注册时间主题精华0阅读权限200帖子
小站金币10823
本帖最后由 Bernie 于
19:16 编辑
游客，如果您要查看本帖隐藏内容请
杀T考G屠鸭，一切尽在TPO小站论坛！
在线时间605 小时经验值2627 小站金币133 最后登录注册时间主题精华0阅读权限30帖子
讲师, 积分 2627, 距离下一级还需 1874 积分
小站金币133
杀T考G屠鸭，一切尽在TPO小站论坛！
在线时间538 小时经验值9789 小站金币951 最后登录注册时间主题精华2阅读权限40帖子
系主任, 积分 9789, 距离下一级还需 212 积分
小站金币951
杀T考G屠鸭，一切尽在TPO小站论坛！
在线时间63 小时经验值273 小站金币28 最后登录注册时间主题精华0阅读权限10帖子
博士生, 积分 273, 距离下一级还需 28 积分
小站金币28
QQQQQQQQQQQQQQQQQQQQQQQQQQQ
又是新的一天，离考试又近了一天，加油！
在线时间136 小时经验值547 小站金币3 最后登录注册时间主题精华0阅读权限20帖子
助教, 积分 547, 距离下一级还需 454 积分
该用户从未签到排名
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
在线时间3 小时经验值96 小站金币0 最后登录注册时间主题精华0阅读权限10帖子
本科生, 积分 96, 距离下一级还需 5 积分
该用户从未签到排名
Parents do notunderstand their children as well as parents did 50 years ago
在线时间6 小时经验值28 小站金币270 最后登录注册时间主题精华0阅读权限10帖子
小学生, 积分 28, 距离下一级还需 3 积分
该用户从未签到排名
小站金币270
看看修改~~~~~~~~~~~~~~~~~~
在线时间78 小时经验值369 小站金币89 最后登录注册时间主题精华0阅读权限20帖子
博士后, 积分 369, 距离下一级还需 132 积分
小站金币89
看修改来了
备考第六天发现了TPO小站
2014清明活动纪念章
参与2014清明节活动的会员
我们将以您绑定的
作为接收批改短信的默认手机号码
订阅小站最新精品课程信息
输入您的手机号码，批改动态随时掌握！
订阅小站最新精品课程信息
您可以在设置—密码安全—绑定手机中随时修改您的手机号码
还差最后一步了!只要填写完邮箱即可同时获得批改短信提醒和小站精品课程信息两大福利了!
版块内容特色：专业托福老师免费为你查漏补缺，助你考前冲刺、勇夺高分！？——来小站就有这样的好事噢！只需花费少量小站金币，即可获得！除了批改之外，还有评语跟评分。心动了？那就赶快行动！
版块内容介绍：这里不仅提供小站王牌托福老师的免费作文批改服务，还会定期上线各种各样的考前写作冲刺活动，帮助考生在原有基础上不断提高，向满分冲刺！
小站论坛，All Rights Reserved 小站国际教育&&沪ICP备号&&The Child Selector
In the second of five articles on the new selectors found in CSS2, we turn to the child selector. This is used to match elements that are direct children of other elements, which is a little more precise than the traditional contextual selector.
If you haven't read the , though, you may want read it first, since the universal selector appears in some of the examples for this, and future, articles.
How It Works
Using the child selector is pretty easy.
It's written using a greater-than symbol (&), and it must appear between two other selectors.
For example:
body & p {color:}
This rule will make green any paragraph which is a direct child of the body element.
Therefore, any paragraph which is the child of some other element-- for example, a div or a table cell-- will not be matched by this rule.
How is this different from traditional contextual selectors?
The difference is that, given a selector like bodyp, any paragraph which is a descendant of the body will be matched.
That can mean a child paragraph, of course, but it can also mean a paragraph which is contained inside a table cell that's inside a table that's part of a div. Contextual selectors could easily be called descendant selectors, since they define which descendants of which elements can be selected.
Selecting Precise Descendants
By chaining child selectors together, it's possible to very precisely target certain elements at certain points in the document.
For example, let's say we want to select any paragraph which is the child of a div, which is itself the child of a div which is the child of the body element.
Furthermore, we want to make those paragraphs lime green on a cyan background.
Thus we write:
body & div & div & p {color: background:}
This will work on exactly those paragraphs described above, and no others.
If we have a paragraph nested inside three divs, it won' neither would a paragraph inside a div which is a child of the body element.
Children and Descendants
For those who are confused by the difference between children and descendants, let's explore that for a moment.
In order to understand it, though, we need to introduce the concept of a "tree view" for a given document.
HTML documents, and indeed most structured documents of any kind, are based on a hierarchy of elements, which is most visible in a tree view of the document. In this hierarchy, each element fits somewhere into the overall structure of the document, and every element is either the parent or child of another element, and often both. See Figure 1 for an example of a document tree.
Figure 1: Element hierarchy diagram.
First, let's talk about the parent-child relationship. In Figure 1, the body element has two children: a p element and a ul element.
The p element, in turn, has two children: the em and strong elements directly below it on the tree.
The p element has one parent, and that's the body element.
In fact, an element can only ever have one parent, although it can have many children.
Now for ancestors and descendants. Take the anchor, a element. It has three ancestors: strong, p, and body. As we walk up the tree toward the top level, every element we pass is an ancestor of the element where we started.
Going the other way is more complicated: To find descendants, we have to follow all the branches downward from our starting point.
Thus, for the paragraph, p element, the descendants are: em, strong, a, and em.
Thus, in order to select the a element using child selector, we would need to write strong & a. Something else, such as p & a would not match the anchor, because it is not a child of the paragraph.
This is not to say that child selection and descendant selections must remain forever separated, as we'll see in the next section.
Children in Context
In addition to the simple child selections we've seen so far, it's possible to make a child selector part of a contextual selector as well:
div ol & li em {color:}
This rule matches any em text that is a descendant of a list item, as long as that list item is a child of an OL element that is a descendant of a div. Note also that there is no whitespace around the & symbol this time, which is legal: Whitespace around this symbol is optional. Thus:
&li&The em text here is &em&not&/em& purple.&/li&
&li&Look, a list:
&li&The emphasized text here &em&is&/em& purple.&/li&
&/div&
&/body&
The purple em text is purple because it's the great-grandchild of an li that is the direct child of the ol, and the ol is the grandchild of the body element. The first em is not matched because its grandparent ol is not the direct child of a div.
Even better, you can string more than one child selector together to precisely target a given type of element. Take this, for example:
body & ol & li {color:}
&body&
&li&The text here is silver.&/li&
&li&Look, a list (and this text is not silver, by the way):
&li&The text here is &em&not&/em& silver.&/li&
&/div&
&/body&
The first list item in the source is silver because it's the child of an ordered list that is itself the child of a body. The second list item in the source is the child of an unordered list, so it can't match the rule. Finally, the third list item in the source is a child of an ordered list, but the ol element is the child of an li element, so it doesn't match either.
Universal Children
Sounds like the title of a Star Trek episode, doesn't it?
In this case, we're talking about using the universal selector in conjunction with the child selector, which can provide some interesting effects.
Let's say you want to boldface only those elements which are children of the body element. That would be done as follows:
body & * {font-weight:}
With this rule, you can easily see which elements are at the "top level" of the document, and which are nested inside other elements.
You can extend this approach to select only grandchildren of the body:
body & * & * {font-weight:}
Now only those elements which are one level down from the "top level" will be selected. Of course, this isn't an effect which we will want very often, but we might want to select only those h1 elements which are grandchildren of the body, and so:
body & * & H1 {font-style:}
We could also select any descendant of an element which is the child of an h1 that is the child of a div:
div & h1 & * *
These sorts of selectors aren't always simple to understand at first glance, but with a little practice and some rigorous thinking, they become clear enough.
Browser Support
The child selector is supported in Internet Explorer 5.x for the Macintosh, and Opera 3.6. It is also supported in the Netscape 6 Preview Release 1 for all the myriad platforms for which it's available, and in Preview Release 3 of Opera 4 for Windows.
Still More to Come
As we've seen, the child selector is a very precise operator, but when combined with contextual and universal selectors, it can lead to some surprising possibilities.
The sorts of selections possible are far beyond anything which can be achieved with simple contextual selectors alone.
This isn't the end of it, though. As we'll see in the next article in the series, the adjacent-sibling selector makes for even more complicated-- but often vastly more useful-- selectors than those we've already seen.
Identity Archipelago
Projects Elsewhere
Redesign Watch