语法填空You went to bed at 10:00 last night. But you woke up in the middle of the night, and{#blank#}1{#/blank#}(find) that you couldn't fall back asleep! It's 3:30 in the morning. Today is a busy day. After {#blank#}2{#/blank#}(get) up at 6:00 in the morning, you're unhappy and worried. Why can't you sleep {#blank#}3{#/blank#}(proper)?
There may be a surprising answer {#blank#}4{#/blank#} the question. Dr Thomas Wehr did a number of research {#blank#}5{#/blank#}(activity) on sleep. During the winter, some people {#blank#}6{#/blank#}(put) in a room with no artificial light (light from lamps, TVs or computers). Then he studied the people's sleep patterns(模式).
What happened? The people didn't fall asleep right away. Most were awake for two hours. Next, they slept for a little {#blank#}7{#/blank#}(long), about four hours. Then they woke up, {#blank#}8{#/blank#} for one to three hours, they stayed awake. Finally, the people slept again for four to five hours. Dr Wehr discovered {#blank#}9{#/blank#} new sleep pattern. But maybe it's not new. In the past, before the electric light came out, perhaps people slept this way.
So, next time you wake up in the middle of the night and can't sleep, relax {#blank#}10{#/blank#}(you)! Your pattern may be normal after all.
