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听力原文：M: So Rebecca, what did you do for spring break? W: I went to southern California. I was in Los Angeles and San Diego. Oh, and I stopped in San Juan Capistrano. That's south of Los Angeles and north of San Diego. I happened to be there just about the time the swallows returned. M: Oh, I've heard about that—they always return on the same day, don't they? W: That's right, on March 19th. And they always fly away on the same day, October 23rd. In the meantime, they migrate over 7,000 miles to get to their winter home. M: Seven thousand miles—imagine! And always coming back on the same day! W: Yes, except for one year, a long time ago-they were delayed for a day by a storm at sea. M: You sure were lucky to be there on the one day of the year when the swallows return. W: Well, I wasn't there exactly on that day. I got to town a couple of days latex—but I did see the parade celebrating the swallows' return. M: They have a parade? The people there must really like those swallows. W: Sure—they bring lots of tourists to town, and besides, the swallows eat insects, including mosquitoes. Where is the town of San Juan Capistrano?A.
North of Los Angeles.
B.
Between Los Angeles and San Diego.
C.
East of San Diego.
D.
Los Angeles.
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【单选题】页面中有一个 select 标签,代码如下: 请选择 选项一 选项二 选项三 选项四 ,要使 “选项四”选中的正确写法_______。
A.
$("#sel").val(" 选项四 ");
B.
$("#sel").val("4");
C.
$("#sel > option:eq(4)").checked;
D.
$(" # sel option:eq(4)").attr("selected");
【单选题】页面中有一个 标签,代码如下: 请选择 选项一 选项二 选项三 选项四 要使“选项四”选中的正确写法是( )。
A.
$("#sel").val(" 选项四 ");
B.
$("#sel").value("4");
C.
$("#sel > option:eq(4)").checked;
D.
$("#sel option:eq(4)").attr("selected","selected");
【单选题】页面中有一个 select 标签,代码如下: 请选择 选项一 选项二 选项三 选项四 ,要使“选项四”选中的正确写法。( )
A.
$("#sel").val(" 选项四 ");
B.
$("#sel").value("4");
C.
$("#sel > option:eq(4)").checked;
D.
$("#sel option:eq(4)").attr("selected","selected");
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