阅读下面短文，然后根据短文的内容从每小题的四个选择项中选出最佳的一项，并把它前面的大写字母填入右边的横线上。

A student is learning to speak British English. He wonders(想知道)：Can I communicate with Americans?Can they understand me?Learners of English often ask:What are the differences between British and American English?How important are these differences?

Certainly,there are some differences between British and American English. There are a few differences in grammar. For example, speakers of British English say“in hospital” and “”Have you a pen?” , Americans say “in the hospital” and “Do you have a pen?” Pronunciation is sometimes different. Americans usually sound theirs in words like “bird”and “hurt”. Speakers of British English do not theirs in these words. There are differences between British and American English in spelling and vocabulary. For example, “colour” and “honour” are British, “color'and “honor” are American，

These differences in grammer, pronunciation, spelling and vocabulary are not important,however. For the most part, British and American English are the same language.

1.According to this passage, a student who is learning to speak American English might be afraid that .

A.British people cannot understand him

B.American people cannot understand him

C.the grammar is loo hard for him

D.the spelling is too hard for him