1. Randy Gardner studied the effects of sleeping too much.
2.During the experiment, Gardner slept for several hours every night.
3.During the experiment, Gardner had trouble speaking clearly.
4.It took two weeks for Gardner to recover from the experiment.
5.Going without sleep is not dangerous for white rats.
6.Scientists are not sure why we need to sleep.
7.In the first paragraph, the words "find out" (Iine 2) mean learn or di,scouer.
8. In the second paragraph (line 14) the word "slurred" means easy to understand.