Richard didn't have a close relationship with his classmates and felt quite isolated because he came from a poor but religious family.
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Richard was selected as representative and to deliver the speech written by the principal at the graduation ceremony.
A. 对
B. 错
表单下拉选项框中默认选中的属性值为（）
A. checked
B. disabled
C. selected
D. value
分组optgroup下拉列表框中分组的标识属性名为（）
A. name
B. label
C. value
D. id
表单中select_option，option标签的display属性是（）
A. inline
B. inline-block
C. block
D. 以上都不是
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