16．聽第10段材料，回答第17至20題．
17．How many lab sessions will the students have every week？
A．One．B．Two．C．Three．
18．What are the students allowed to wear in the lab？
A．Long scarves．B．Loose clothes．C．Tennis shoes．
19．Why should the students avoid mixing liquid with paper？
A．It may cause a fire．B．It may create waste．C．It may produce pollution．
20．What does the speaker mainly talk about？
A．Grades the student will receive．
B．Rules the students should follow．
C．Experiments the students will do．

分析 略

解答 ACAB

點評 略

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Passage outlineSupporting details
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Tending to do damage to things around him
Having little sympathy or concern for others
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Lacking the awareness of（72）obeying/observingrules and regulations
Having difficulty concentrating on something for long
Factors （73）resultingin
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A genetic disorder giving rise to a behaviour disorder has also been found．
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