Ⅰ.教材活用——根据课文内容完成下面的短文
British and American English differ 1.___ many ways.The difference in vocabulary is most obvious.Sometimes，the same word has 2.____ slightly different meaning，which can be confusing.There are a few differences in grammar，too.The British use prepositions where Americans sometimes omit 3._____.The other two areas in 4._____ the two varieties differ are spelling and pronunciation.American spelling seems simpler，and many factors 5.________________(influence) American pronunciation since the first settlers arrived there.Although there are so many differences，some experts believe that the two varieties are moving together.Communications across the Atlantic have developed 6._______ (steady) for over a century.
