that had looked at the【B8】______between sleep habits and cognitive ability in adults and adolescents.

Study the following drawing carefully and write an essay in which you should 1)describe the drawing, 2)interpret its meaning and implications, and 3)give your comments. You should write 160-200 words neatly on the ANSWER SHEET.(20 points)

But the distinction【B20】______by the time they were seven.

You want to invite some friends to a party. Write an invitation letter to them individually. In the letter, you should include the following items;1)invite him/her to your party,2)explain the reasons for holding the party,3)describe the activities you will arrange for. You should write neatly on the ANSWER SHEET.Do not sign your own name at the end of the letter. Use " Li Ming". Do not write the address.

about six points below those of their【B19】______at the age of three.

Boys were not completely【B18】______Irregular bedtimes left their

【B17】______a regular bedtime did seem to affect their cognition.

visits interviewers【B15】______to their homes.

 They were also asked to take tests from【B16】______their IQs could be estimated.  

 The bedtime information they used was【B14】______during four

178 children who are【B13】______in a multidisciplinary research