public List<Question> listQuestions(String WhereClause) {
		SQLCommand cmd = new SQLCommand();
		RowSet rs = cmd.queryRowSet("select * from question where "+WhereClause);
		Question question;
		List<Question> list = new ArrayList<Question>();
		try {
			while (rs.next()) {
				question=new Question();
				question.setQId(rs.getLong("q_id"));
				question.setSurvey(rs.getLong("s_id"));
				question.setQType(rs.getLong("q_type"));
				question.setQHead(rs.getString("q_head"));
				question.setQBody(rs.getString("q_body"));
				question.setQResult(rs.getString("q_result"));
				question.setQImg(rs.getString("q_img"));
				question.setQJdtz(rs.getString("q_jdtz"));
				question.setQOrder(rs.getLong("q_order"));
				list.add(question);
			}

			return list;

		} catch (SQLException e) {

			e.printStackTrace();
		}
		return null;
	}