无法使用react状态更改<select>的默认值

constructor(props) {
  super(props);
  this.state = {
    selectedValue: 'default'
  };
}

render() {
  return (
    <select value={this.state.selectedValue} onChange={this.handleChange}>
      <option value="default">Default</option>
      <option value="option1">Option 1</option>
      <option value="option2">Option 2</option>
    </select>
  );
}

handleChange(event) {
  this.setState({ selectedValue: event.target.value });
}