第6题: [单项选择]Could you tell me______ in the Russian alphabet A. how many letters are B. how many letters are there C. how many there are letters D. how many letters there are 参考答案:D 答案解析:根据句子结构,我们可以看出此处是宾语从句,而宾语从句中主谓不颠倒,如:I don’’t know where he has gone.我不知道他到哪里去了。所以只有D是正确答案。