Help Android Studio database

I am doing an App of test questions, in which 30 questions should be left with their possible markable answers in the same layout. My doubts are when I have to create a database. I have created the res -> raw folder where I keep the questions and answers as follows:

pregunta1;opcionBuena;opcionmala1;opcionmala2;img1
pregunta2;opcionBuena;opcionmala1;opcionmala2;img2
etc..

Now following tutorials and examples I have created the DBContract classes:

public class DBContract {

public static abstract class TestEntry implements BaseColumns{
    public static final String TABLE_NAME ="bdTest";
    public static final String PREGUNTA = "pregunta";
    public static final String CORRECT_ANSWER = "correctAnswer";
    public static final String DISTRACTOR1 = "distractor1";
    public static final String DISTRACTOR2 = "distractor2";
    public static final String IMAGEN = "imagen";
   }
}

And DBHelper:

public class DBHelper extends SQLiteOpenHelper {
    public static final String DATABASE_NAME = "BBDD.db";
    public static final int DATABASE_VERSION = 1;

    public DBHelper(Context context) {
        super(context, DATABASE_NAME, null, DATABASE_VERSION);
}

@Override
public void onCreate(SQLiteDatabase sqLiteDatabase) {
    sqLiteDatabase.execSQL("CREATE TABLE " + DBContract.TestEntry.TABLE_NAME+ "("
            + DBContract.TestEntry._ID + " INTEGER PRIMARY KEY"
            + DBContract.TestEntry.PREGUNTA + "TEXT NOT NULL, "
            + DBContract.TestEntry.CORRECT_ANSWER + "TEXT NOT NULL, "
            + DBContract.TestEntry.DISTRACTOR1 + "TEXT NOT NULL, "
            + DBContract.TestEntry.DISTRACTOR2 + "TEXT NOT NULL, "
            + DBContract.TestEntry.IMAGEN + "TEXT )");
    lecturaBaseDatos(sqLiteDatabase);

}

@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {

}

private ArrayList<Question> lecturaBaseDatos(SQLiteDatabase s) {
    ArrayList<Question> test = new ArrayList<Question>();
    SQLiteDatabase db = this.getReadableDatabase();
    Cursor c = db.rawQuery("select * from " + DBContract.TestEntry.TABLE_NAME,null);
    if(c.moveToFirst()){
        do{
            test.add(new Question(
                    c.getString(1),
                    c.getString(2),
                    c.getString(3),
                    c.getString(4),
                    c.getString(5)));
        } while (c.moveToNext());
    }
    db.close();
    return test;
   }
}

I also have a Test class () that is a list of the Question () class which forms the complete question with its answers.

This is the first time that I have made a database and I know that it is badly implemented but I can not find a way to do it well, especially the readingBaseData method that I have adapted it with respect to a found example.

I would also like to know how I should call showing the test list in the Activity that shows the tests.

Thank you.