计算：（﹣40）﹣（﹣28）﹣（﹣19）+（﹣24）．
解：（﹣40）﹣（﹣28）﹣（﹣19）+（﹣24）
=﹣40+28+19﹣24
=﹣（40+24）+（28+19）
=﹣64+47
=﹣17
根据短文理解，选择正确答案。
Attention, Students! Beach Party Comes!
We will hold an outdoor party in Fulong on July 10.
Activities
1). Bike riding or hiking from the Student Centre to the beach
2). A cookout (野炊) on the beach
3). Swimming and sailing competitions
You should bring
sun cream, sunglasses, hats, swimsuits, hiking shoes, and personal items
Deadline
(最后期限)
for signing up
Friday, June 28
Fee
$300 per person(每人)
Meet at the Student Centre at 9:30 am, July 10.
和字成语我会填。
①石墨；②铝；③酒精；④盐酸；⑤二氧化碳；⑥碳酸氢钠固体；⑦氢氧化钡溶液；⑧纯醋酸；⑨氢氧化钠固体；⑩氯化氢气体．
我国公民依法享有的一项最基本的政洽权利是监督权。（ ）
