| Scientists are learning more about our
need for sleep. Most people sleep{{U}} (26) {{/U}}eight hours each
night.{{U}} (27) {{/U}}people sleep more than{{U}} (28)
{{/U}}and others sleep as{{U}} (29) {{/U}}as two or three hours each
night. Scientists do not know exactly{{U}} (30) {{/U}}some people sleep
more than others. Dr. Ernest Hartman has a (an){{U}} (31) {{/U}}about
this. He believes that the{{U}} (32) {{/U}}of sleep depends on how a
person{{U}} (33) {{/U}}problems. He said people who need only a few{{U}}
(34) {{/U}}sleep usually are people who have much energy and make good
use of{{U}} (35) {{/U}}to get their work to be done quickly.{{U}}
(36) {{/U}}he said many people who sleep longer than normal do
creative work and seem to need{{U}} (37) {{/U}}dreaming time to find
solution{{U}} (38) {{/U}}emotional problems. Som A. those B. that C. the hour D. the time 更多"Scientists are learning more about "的相关试题: [单项选择]
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