問題詳情：
上面是對廣州市某中學的中學生睡眠情況調查的結果，請參照以下資訊，用英文寫一篇調查報告，並提出改進措施。
注意：1. 詞數120左右，開頭語已爲你寫好；
2. 適當增加細節，以使行文連貫。
As is shown in the chart,
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【回答】
As is shown in the chart, most students don’t have enough sleep. Surprisingly, most of the surveyed students sleep less than 7 hours. Only a few students sleep 7 to 9 hours. And those who sleep more than 9 hours are in the minority.
Many factors contribute to this problem. First of all, due to the fierce competition, students can only achieve success by working hard. Secondly, with too much homework to do, students have busy schedules. Other factors, such as sleeping condition, noisy environment and pressure from life should also be considered.
Therefore, effective measures should be taken to solve the problem. Most importantly, teachers should give less homework. In the meanwhile, students should improve their study efficiency so that they can have enough sleep at night.
知識點：圖畫作文
題型：書面表達
