【題目】在“DIS驗證牛頓第三定律”實驗中，把兩個 傳感器的掛鉤鉤在一起，向相反方向拉動，得到如圖乙所示的圖線。
（1）請在上述空格填上傳感器名稱。
（2）（多選題）根據(jù)圖線能得出的結論是 。
A．作用力和反作用力性質相同
B．作用力和反作用力同時存在同時消失
C．作用力和反作用力大小相等方向相反
D．作用力和反作用力分別作用在兩個物體上
科目：高中地理 來源： 題型：
【題目】A
The first ancient Olympic Games for which we still have written records were held in 776 BC. Coroebus won the only event at the Olympics. This made him the very first Olympic champion in history. Then they grew and continued to be played every four years. In 393 AD, the Roman emperor Theodosius Ⅰ, a Christian, announced to end the Games because of their pagan (異教的) influences.
About 1,500 years later, a young Frenchman named Pierre de Coubertin began their revival (恢復). In 1892 Coubertin first brought forward his idea to revive the Olympic Games but failed.
Two years later, Coubertin organized a meeting with 79 delegates (代表) who represented nine countries. At this meeting he got what he wanted. All the delegates at the conference voted for the Olympic Games. They also decided to have Coubertin set up an international committee to organize the Games. This committee became the International Olympic Committee (IOC) and Demetrious Vikelas from Greece was selected to be its first president. Athens was chosen for the revival of the Olympic Games and the planning was begun.
The very first modern Olympic Games opened in the first week of April, 1896. Since the Greek government had been unable to afford a stadium, a rich Greek architect, Georgios Averoff, donated one million drachmas (over $100,000) to repair the Panathenaic Stadium, originally built in 330 BC.
Since the Games were not well publicized internationally, contestants (選手) were not nationally chosen but rather came individually and at their own expense. Some contestants were tourists who happened to be in the area during the Games.
【1】What would be the best title for the passage?
A. The History of the Olympics
B. How Coubertin Set up IOC
C. The First Modern Olympic Games
D. Great Changes in the Olympic Games
【2】 Coubertin held a most important meeting with 79 delegates in______________.
A. 1500 B. 1892
C. 1894 D. 1896
【3】 Who offered money to help the first modern Olympic Games?
A. Demetrious Vikelas.
B. Coroebus.
C. Pierre de Coubertin.
D. Georgios Averoff.
【4】At the first modern Olympic Games, ______________.
A. winners were given money as prize
B. IOC invited contestants to tour Greece
C. there were no strict rules for being a contestant
D. many countries chose some athletes to compete
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【題目】在某些恒星內，3個α粒子結合成一個
，原子的質量是12．000 0u，
原子的質量是4．002 6u，已知1u＝1．66×10－27kg，則（ ）
A．反應過程中的質量虧損是Δm＝0．007 8u
B．反應過程中的質量虧損是Δm＝1．29×10－29kg
C．反應過程中放出的能量是7．266MeV
D．反應過程中放出的能量是1．16×10－19J
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【題目】如圖所示，可看做質點的兩物塊A，B，質量分別為2m，m。A放在光滑水平桌面上，一不可伸長的柔軟輕繩跨過光滑輕質定滑輪，兩端分別與A、B相連接，A和滑輪間的輕繩與桌面平行。現(xiàn)將A從靜止釋放，當B落地時，A還在桌面上。不計空氣阻力，重力加速度為g。求：
（1）B落地前的加速度a的大小；
（2）B落地前滑輪對輪軸的壓力F大小。
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【題目】化學興趣小組為探究SO2的性質，按下圖所示裝置進行實驗。(已知：Na2SO3+H2SO4===Na2SO4+SO2↑+H2O)
請回答下列問題：
(1)裝置A中盛放濃硫酸和亞硫酸鈉的儀器名稱分別是________、________。
(2)反應后，裝置B中發(fā)生的現(xiàn)象是_________________________________；反應的離子方程式為______________________________；裝置C中的現(xiàn)象是___________________________，表現(xiàn)了SO2的________；裝置D中現(xiàn)象是_____________________________________________，發(fā)生反應的化學方程式為_________________________________________。
(3)裝置E的目的是探究SO2與品紅作用的可逆性，請寫出實驗操作及現(xiàn)象_________________________。
(4)F裝置的作用是________________________，漏斗的作用是___________________________。
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【題目】一個內壁光滑的圓錐筒的軸線是豎直的，圓錐固定，有質量相同的兩個小球A和B貼著筒的內壁在水平面內做勻速圓周運動，如圖所示，A的運動半徑較大，則（ ）
A．A球的角速度必小于B球的角速度
B．A球的線速度必小于B球的線速度
C．A球運動的周期必大于B球運動的周期
D．A球對筒壁的壓力必大于B球對筒壁的壓力
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【題目】（11分）雨過天晴，房屋對面的觀察者看到這樣的現(xiàn)象：屋檐上每隔相同的時間間隔落下一滴亮晶晶的水滴，當?shù)?滴正欲落下時，第1滴剛好到達地面，濺出水花，而第3滴與第2滴分別位于高為1 m的窗戶的上、下沿，如圖所示，問：（重力加速度g取10 m/s2）
（1）此屋檐離地面多高？
（2）滴水的時間間隔是多少？
（3）水滴落地前最后 1 m的平均速度是多大？
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