举一反三
- What did Mr Bennet do when Mrs Bennet forced him to make Lizzy marry Collins? A: He obeyed Mrs Bennet and forced Lizzy to marry Collins B: He did not care about Lizzy's marriage. C: He persuade Lizzy to listen to her mother. D: He supported Lizzy's choice.
- HTML： <ul> <li>1</li> <li>2</li> <li>3</li> </ul> <ul> <li>A</li> <li>B</li> <li>C</li> </ul> CSS： li:nth-child(1){ color:red; } 哪些元素变为红色？
- HTML：<;ul>;<;li>;1<;/li>;<;li>;2<;/li>;<;li>;3<;/li>;<;/ul>;<;ul>;<;li>;A<;/li>;<;li>;B<;/li>;<;li>;C<;/li>;<;/ul>;CSS：li:nth-child(1){color:red;}哪些元素变为红色？ A: 1 B: A C: 1和A D: 没有元素变为红色
- HTML：<;ul>;<;div>;div1<;/div>;<;li>;1<;/li>;<;li>;2<;/li>;<;li>;3<;/li>;<;/ul>;<;ul>;<;div>;div1<;/div>;<;li>;A<;/li>;<;li>;B<;/li>;<;li>;C<;/li>;<;/ul>;CSS：li:nth-child(1){color:red;}哪些元素变为红色？ A: 1 B: A C: 1和A D: 没有元素变为红色
- 下列各组量子数哪些是不合理的，为什么？ ① n=2，li=1，mi=0 ② n=3，li=2，mi=-1 ③ n=3，li=0，mi=0 ④ n=3，li=1，mi=+1 ⑤ n=2，li=0，mi=-1 ⑥ n=2，li=3，mi=+2
内容
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在jQuery中,以下( )选项可以选取代码中“javascript。[br][/br][ul][li]html[/li][li]css[/li][li]javascript[/li][/ul] A: $("li:eq(3)"); B: $("li:lt(1)"); C: $("li:odd"); D: $("li:gt(1)");
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Anna: Did you forget ______ ? Li: Yes, I did.
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Why Mrs Bennet wanted to leave Lizzy alone with Mr Collins? Because _____________ A: She was eager to make Lizzy marry Mr Collins. B: She did not know how to refuse Mr Collins. C: Mr Collins forced her to do so. D: Lizzy was willing to have a private conversation with Mr Collins.
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写出下列各组中缺少的量子数： ① n=？，li=2，mi=0，si= +1/2 ② n=2，li=？，mi=-1，si= -1/2 ③ n=4，li=2，mi=0，si= ？ ④ n=3，li=1，mi=？，si= -1/2
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题目:删除列表中重复的元素 要求:使用while循环 --------------------------------------------------------- 注意:不可以增加或删除程序行,也不可以更改程序的结构。 --------------------------------------------------------- li = [1,2,3,4,5,2,1,3,4,57,8,8,9] print("原列表:",li) i = 0 #变量i是li的下标 #**********FOUND【1】********** while i >= len(li): j = i + 1 #**********FOUND【2】********** while j <= len(li): if li[i] == li[j]: del li[j] #**********FOUND【3】********** break j = j + 1 i = i + 1 print("去除重复元素后的列表为:",li)