"He looks normal." That's what everybody says when I tell them my son was just diagnosed as autism (孤独症). They all say it without     1    . It's true. Alejandro does look like every other     2    boy. He plays, he smiles, and he runs around with the two-year-old boy's boundless     3    until he is too tired. He laughs when you move your fingers     4    on a sensitive part of his body. And he often     5    his toys like every other young child at his age. But most of the time, Alejandro     6    in his own little world playing with his toys all by himself     7    in a group of kids and     8    you when you talk to him loudly. At that time he's alone, no matter how hard you try to     9    him. My wife and I get     10    . We ask for "nose kisses" or hugs and many times he doesn't     11    us. It's extremely anxious when your child's face is right in front of you and he won't admit your     12    .
    He regularly doesn't eat. The food often     13    him when he puts it in his mouth. He is very small     14    his age. We are told that it's another     15    of the autism. Because autism isn't like some other     16    , there is no set treatment. Each child needs to be treated     17    ; what works for one probably doesn't work for another. Try a treatment. If it doesn't work, you have to try another     18    you hopefully find something that does work.
    The future is cloudy, but we will try everything we can do to reach him, because we love him and we know he's a(n)     19    little boy. And we believe with the help of love, we can     20    any difficulty. 
 
【正确答案】 A
【答案解析】 根据上文的"He looks, normal." That's what everybody says...可知是无一例外,选exception。