把一个铝制易拉罐充满CO2，然后往罐内注入足量的NaOH溶液，立即用胶布密封罐口。经过一段时间后，观察到 ，
“探究加速度与物体受力的关系”的实验装置如 图，小车A质量为m1连接在小车后面的纸带穿过电 火花打点计时器B,它们均置于水平放置的一端带有 定
Nowadays many young people like ______ sports, such as skydiving and bungee jumping. A. funny B. loose
Tom ____ desperate in front of the locked door. A. fell B. felt C. dropped
已知弱电解质电离是吸热过程，试判断：下列溶液中H+浓度最大的是( )A.30 ℃，100 mL 0.01 mol·L-1CH3COOHB.40℃，50 mL 0.01 mol·L-1CH3COOHC.50 ℃，30 mL 0.01 mol·L
Do you think the Democratic People’s Republic of Korea will all the contents of the Korean nuclear issue? A.approve B.be approved C.be approved of
（2010·福建省石狮石光华侨联合中学高中毕业班5月份高考模拟） 35. A few days after the interview, I received a letter me admission to the university. A．offer
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