【題目】2016年6月25日20時00分07秒，長征七號運載火箭從海南文昌航天發(fā)射中心首次發(fā)射，成功將載荷送入預定軌道，任務取得圓滿成功。如圖所示，長征七號多級火箭發(fā)射時，第一級火箭點火后，使衛(wèi)星向上勻加速運動的加速度為50 m/s2，燃燒30 s后第一級脫離，第二級火箭沒有馬上點火，所以衛(wèi)星向上做加速度為10 m/s2的勻減速運動，10 s后第二級火箭啟動，衛(wèi)星向上的加速度為80 m/s2，這樣經(jīng)過1分半鐘第二級火箭脫離時，衛(wèi)星的速度多大？
請你用v-t圖象描述這一過程。
科目：高中地理 來源： 題型：
【題目】 短文改錯
假定英語課上老師要求同桌之間交換修改作文，請你修改你同桌寫的以下作文。文中共有10處語言錯誤，每句中最多有兩處。每處錯誤僅涉及一個單詞的增加、刪除或修改。
增加：在缺詞處加一個漏字符號(∧)，并在其下面寫出該加的詞。
刪除：把多余的詞用斜線(＼)劃掉。
修改：在錯的詞下畫一橫線，并在該詞下面寫出修改后的詞。
注意：
1. 每處錯誤及其修改均僅限一詞；
2. 只允許修改10處，多者(從第11處起)不計分。
Which is known to all, nowadays the Internet is playing more and more important part in our daily life. In it, we can not only read news at home and abroad but also get so much information as possible. We are often send e-mails to our classmates. We can make telephone call to our families as well as our friends. However, we can go to school on the net, read different kinds of books and even teach myself English. We can also enjoy music, watching sports and play computer games on the Net. We could do shopping even without leaving our homes.
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科目：高中地理 來源： 題型：
【題目】B
Katharine Graham, once described as ＂the most powerful woman in America＂, was the owner and publisher of The Washington Post newspaper. Under her leadership, it became one of the most important newspapers in the country.
Katharine Graham was born in New York in 1917. Graduating from the University of Chicago in 1938, Katherine got a job as a reporter for a newspaper in San Francisco, California. In 1933, Katharine’s father bought a failing newspaper, The Washington Post. It was the least successful of five newspapers in Washington.
Soon Katharine returned to Washington and got a job editing letters to the editor of her father’s newspaper. In 1946, her husband Philip Graham became publisher of The Washington Post. When she was 46, her husband died, leaving Katharine Graham four children to raise and a newspaper to operate.
At first, she was concerned only with finding a way to keep control of The Washington Post until her sons were old enough to lead it. She had no training in business or experience in operating a large company and decided to learn. She hired excellent reporters and editors. In 1969, Missus Graham became publisher as well as president of The Washington Post company. In the 1970s, The Washington Post became famous around the world. Katharine Graham also played an important role in supporting women by employing more of them. When she was eighty years old, Katharine Graham wrote a very popular book called Personal History about her life, which won a Pulitzer prize for biography in 1998. Friends of Katharine Graham said she used her intelligence and bravery to improve the American media.
【1】 Katharine Graham first worked as ___________.
A. a reporter B. an editor
C. a publisher D. a manager
【2】 When Katharine’s father bought The Washington Post, __________.
A. it had been in business for a short time
B. it was one of the largest newspapers in the US
C. it was in a difficult situation
D. it had enjoyed great success and fame
【3】The most difficult time for Katharine came when __________.
A. her father died
B. her husband died
C. she took control of The Washington Post
D. she returned home to raise her four kids
【4】What can we infer from the passage?
A. The newspaper was failing under Katharine’s control.
B. There were more women editors than men editors in The Washington Post.
C. Katharine probably had a difficult time operating the newspaper at first.
D. Katharine was best known for her book Personal History.
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科目：高中地理 來源： 題型：
【題目】短文改錯
假定英語課上老師要求同桌之間交換修改作文，請你修改你同桌寫的以下作文。文中共有10處語言錯誤，每句中最多有兩處。錯誤涉及一個單詞的增加、刪除或修改。
增加：在缺詞處加一個漏詞符號（∧），并在其下面寫出該加的詞。
刪除：把多余的詞用斜線（\）劃掉。
修改：在錯的詞下劃一橫線，并在該詞下面寫出修改后的詞。
注意：
1. 每處錯誤及其修改均僅限一詞；
2. 只允許修改10處，多者（從第11處起）不計分。
Dear friends,
It is real a good chance to have met all of you here. We have spent several precious weekend in learning in the English Club. Although we have been members for a short period of times, we have made a great progress. That is because we are all very actively and the activities are not only enjoyable and also helpful. Besides, the foreign teachers here work hard and try his best to make the activities lively and interested. I am very pleased to say that all of us greatly improved our spoken English so far. I am looking forward to see all of you again in the near future!
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科目：高中地理 來源： 題型：
【題目】目前有些居民區(qū)內樓道燈的控制，使用的是一種延時開關。該延時開關的簡化原理如圖所示。圖中D是紅色發(fā)光二極管（只要有很小的電流通過就能使其發(fā)出紅色亮光），R為限流電阻，K為按鈕式開關，虛線框內S表示延時開關電路，當按下K接通電路瞬間，延時開關觸發(fā)，相當于S閉合，這時釋放K后，延時開關S約在1 min后斷開，電燈熄滅。根據(jù)上述信息和原理圖，我們可推斷：
按鈕開關K按下前，發(fā)光二極管是________（填“發(fā)光的”或“熄滅的”），按鈕開關K按下再釋放后，電燈L發(fā)光持續(xù)時間約________min。這一過程中發(fā)光二極管是________。限流電阻R的阻值和燈絲電阻RL相比，應滿足R________RL的條件。
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【題目】兩物塊A、B用輕彈簧相連，質量均為2 kg，初始時彈簧處于原長，A、B兩物塊都以v＝6 m/s的速度在光滑的水平地面上運動，質量4 kg的物塊C靜止在前方，如圖所示．B與C碰撞后二者會粘在一起運動．則在以后的運動中：
（1）當彈簧的彈性勢能最大時，物塊A的速度為多大？
（2）系統(tǒng)中彈性勢能的最大值是多少？
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【題目】右圖所示的實驗裝置驗證m1、m2組成的系統(tǒng)機械能守恒．m2從高處由靜止開始下落，m1上拖著的紙帶打出一系列的點，對紙帶上的點跡進行測量，即可驗證機械能守恒定律．如圖給出的是實驗中獲取的一條紙帶：0是打下的第一個點，每相鄰兩計數(shù)點間還有4個點（圖中未標出），計數(shù)點間的距離如圖所示．已知m1＝50 g、m2＝150 g，則（結果均保留兩位有效數(shù)字）
（1）在紙帶上打下計數(shù)點5時的速度v＝______m/s；
（2）在打下第“0”到打下第“5”點的過程中系統(tǒng)動能的增量ΔEk＝________ J，系統(tǒng)勢能的減少量ΔEp＝______J；（取當?shù)氐闹亓铀俣萭＝10 m/s2）
（3）若某同學作出
v2－h(huán)圖象如圖所示，則當?shù)氐闹亓铀俣萭＝________m/s2.
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科目：高中地理 來源： 題型：
【題目】如圖，水平正對放置的兩塊足夠大的矩形金屬板，分別與一恒壓直流電源（圖中未畫出）的兩極相連，M、N是兩極板的中心。若把一帶電微粒在兩板之間a點從靜止釋放，微粒將恰好保持靜止�，F(xiàn)將兩板繞過M、N且垂直于紙面的軸逆時針旋轉一個小角度θ后，再由a點從靜止釋放一這樣的微粒，該微粒將
A．仍然保持靜止
B．靠近電勢較低的電極板
C．以a=g(1–cos θ)的豎直加速度加速（g表示重力加速度）
D．以
的水平加速度加速（g表示重力加速度）
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