单选题：根据短文回答题。Sleepless at nightIt was a normal summer night Humid

根据短文回答题。Sleepless at nightIt was a normal summer night Humidity (湿气) hung in the thick air
I couldn't go to sleep, partly because of my cold and partly because of my expectations for the next day My mum had said that tomorrow was going to be a surprise
Sweat stuck to my aching body Finally, I gathered enough strength to sit up I looked out of my small window into the night there was a big bright moon hanging in tile sky, giving off a magic light
I couldn't stand the pressure anymore, so I did what I always do to make myself feel better I went to the bathroom and picked up my toothbrush and toothpaste I cleaned my teeth as if there was no tomorrow Back and forth, up and down
Then I walked downstairs to look for some signs of movement, some life Gladiator,
my cat, frightened me as he meowed (喵喵地唱着) his sad song, He was on the old
orange couch (长沙发), sitting up on his front legs, waiting for something to happen He looked at me as if to say, "I'm lonely, pet me I need a good hug (紧抱)" Even the couch begged me to sit on it
In one movement I settled down onto the soft couch This couch represented my parents' marriage,-my birth, and hundreds of other little events
As I held Gladiator, my heart started beating heavily My mind was flooded with questions: What's life? Am I really alive? Are you listening to me? Every time I moved my hand Clown Gladiator's body, I had a new thought; each touch sang a different song
I forgot all about the heat and the next day's surprise The atmosphere was so full of warmth and silence that i sank into its arms Falling asleep with the big cat in my arms I felt all my worries slowly move awayThe author of the passage could not go to sleep partly because（　　） A．it was too cold
B．it was too dry
C．he had cold
D．he had a fever