<form action="http://www.csdn.net" onsubmit=" return  checkall();"   >

<div class="subject">
<h2>你喜欢吃的水果?</h2>
 <input type="radio" name="fruit" value="苹果" id="Radio1" /><label for="Radio1">苹果</label>
<input type="radio" name="fruit" value="香蕉" id="Radio2" /><label for="Radio2">香蕉</label>
<input type="radio" name="fruit" value="桔子" id="Radio3" /><label for="Radio3">桔子</label>
<input type="radio" name="fruit" value="梨" id="Radio4" /><label for="Radio3">梨</label>
</div>

<div class="subject">
<h2>你喜欢的颜色?</h2>
 <input type="radio" name="color" value="红" id="Radio5" /><label for="Radio5">红</label>
<input type="radio" name="color" value="蓝" id="Radio6" /><label for="Radio6">蓝</label>
<input type="radio" name="color" value="绿" id="Radio7" /><label for="Radio7">绿</label>
<input type="radio" name="color" value="紫" id="Radio8" /><label for="Radio8">紫</label>
</div>

<div class="subject">
<h2>你想去旅游的国家?</h2>
 <input type="radio" name="state" value="日本" id="Radio9" /><label for="Radio9">日本</label>
<input type="radio" name="state" value="美国" id="Radio10" /><label for="Radio10">美国</label>
<input type="radio" name="state" value="德国" id="Radio11" /><label for="Radio11">德国</label>
<input type="radio" name="state" value="英国" id="Radio12" /><label for="Radio12">英国</label>
</div>
<input type="submit" value="提交"   />
</form>
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                      alert("您这一题