生物兴趣小组将一株开红花的豌豆和另一株开白花的豌豆进行杂交，并将杂交所得的豌豆全部种下，子代豌豆全开红花．图6为白花豌豆花的结构示意图，请在填写图中序号．

若x²ⁿ=2，则x⁶ⁿ=____．

    As we know, English is w____ used around the world. But can all English speakers understand each other all the time? Of c____ not. ____（甚至）the same word can have many different meanings. Sometimes the meaning can change, depending on the country where it is ____（说）. For example, there are differences between British English and American English. Also, Australian English is a little different from British English. If you want to succeed in making y____ understood, you need to know some of these differences.