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<form action="/plays/html-form-submit" method="get">
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<input type="radio" name="sex" value="Male"> Male<br>
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<input type="radio" name="sex" value="Female" checked="checked"> Female<br>
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<input type="submit" value="提交">
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</form>
<form action="/plays/html-form-submit" method="get">
<input type="radio" name="sex" value="Male"> Male<br>
<input type="radio" name="sex" value="Female" checked="checked"> Female<br>
<input type="submit" value="提交">
</form>