Ⅰ.单词拼写
1．This socalled translation is pure n ________.
2．There is a s________ of truck accidents occurring on the freeway.
3．When we b________， we draw air into our lungs.
4．His white hair was in a sharp c________ to his dark skin.
5．The story is i________， so we can't believe it.
6．Lucy used to be Dave's ________(未婚妻)．
7．They claimed to have discovered a________ (治疗) for the disease.
8．It's ______________ (难以令人相信) that he should have gone to live in such a dangerous country.
9．The fresh air is ________ (有益处) to you.
10．At that time in Southern States, blacks were not ____ (对待) as equal citizens.
