1.沵早点起床好吗?这对沵的健康有好处 .Would you mind ______ ________early|?It's good _______ your _________.2.老师们在开会Teachers ________ __________ a ___________3.完成这项任务花了他三天时间 .It _______ him three
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1.沵早点起床好吗?这对沵的健康有好处 .Would you mind ______ ________early|?It's good _______ your _________.2.老师们在开会Teachers ________ __________ a ___________3.完成这项任务花了他三天时间 .It _______ him three
1.沵早点起床好吗?这对沵的健康有好处 .
Would you mind ______ ________early|?
It's good _______ your _________.
2.老师们在开会
Teachers ________ __________ a ___________
3.完成这项任务花了他三天时间 .
It _______ him three days _______ _______ this __________
4.Jack,别穿那双鞋了,太旧了 .
Jack _________ you ________ not ___________ that pair of shoes?They are too old
5.你能为家长会做些海报吗?
Could you ______ some posters __________ parents'meeting
适当形式填空
1.Mr Green isn't in his office .He is at a ________ (meet)
2.Can you finish these _____(task) in two days
3.The music is too ________(noise) .Please turn it down
4.Could you please _____(feed) the dog?
5.Would you mind ________(babysit) my sister while I'm away .
求证顺次连接菱形各边中点所得的四边形是矩形
1.沵早点起床好吗?这对沵的健康有好处 .Would you mind ______ ________early|?It's good _______ your _________.2.老师们在开会Teachers ________ __________ a ___________3.完成这项任务花了他三天时间 .It _______ him three
1.meeting 1 getting up
2.tasks
3.noisilly
4.faad
5.babysitting
已知：菱形ABCD
AB BC CD DA 的中点 分别为E F G H
∵EH//BD 且等于1/2 BD 又FG//BD 且等于1/2 BD (根据三角形中线原理)
∴EH=BD
∴EFGH为平行四边形
又∵AC垂直BD
∴EF//AC 且垂直BD
∴EF垂直EH
∴以EFGH为矩形