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問題的種類

數學 高中

求解,萬分感謝🙏🙏🙏🙏🙇🙇🙇🙇

高師大附中 108學年度第2學期第2次段考高中部一年級數學科試卷 班級: 座號: 姓名: 多選題(每題8分,答錯1個選項得5分,錯2個選項得2分,其餘不給分,共16分) 1. 有一種細菌,每隔一個小時死亡2隻,剩下的分別分裂成2隻,設原有5隻細菌, 令個小時後的細菌數量為a,且6. = "net-97,n為正整數。下列敘述何者正確? (2) b₂ = 8 (3)數列(a)為等差數列 (4)數列(b)為等比數列 (1) a₁ = 6 (5)a-b=4,n為正整數。 2. 某肥皂廠商推出一種新產品,在上市前以不同的單價X(單位:十元) 調查市場的需求量Y (單位:萬盒)。調查結果如表,下列敘述何者正確? X(十元) 8 9 10 11 12 ¥ (萬盒) 11 12 10 8 9 (1) X 的變異數為2 (2) X 和Y的相關係數為0.8 (3) Y對X的迴歸直線的斜率為0.8 (4) Y 對 X 的迴歸直線通過點(10,10) (5)若單價定為150元,預估市場的需求量有6萬盒。 二、填充題(配分如下表,全對才給分,共 66 分) 格數 1 2 3 4 5 8 9 10 11 12 6 7 38 得分 7 20 26 32 14 43 48 52 60 63 56 1. 有兩個等差數列(〉、〈br〉的前n項和的比為(2n+4):(n-1),則+3 bo+b₁4 2. 設數列(a)之首項a =1且a =a+6n²+1,n為自然數,則一般項a=. 3. 已知數列(a)的前n項和Sh=2a-2020,n為正整數,則前5項和S= 1 1 ++ 1 27-1 則n的最小值為 若|2-|<- 4. 設等比級數 S. =1+2+-+- , 248 1000 5. 某人欲參加郵局教育儲蓄存款,年利率6%,複利計算,若每年年初固定存入 10000 元, 則第 10 年年底期滿後,結算本利和有____元。(已知1.06 約1.7908) 6. 某地區統計其三年來的人口成長率分別為60%、20%、10%,則此地區這三年的 每年人口平均成長率為何?答: 7. 老師實施分組教學並對兩組同學進行測驗,兩組的分數如下: 第一組 30 人,平均分數 70 分,標準差5分; 第二組 20 人,平均分數60分,標準差 10 分。 若將這兩組學生成績合併,則 分(用根式表示)。 分。(2)新的標準差為 (1)新的算術平均數為 253 13 66

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英文 國中

想問這題A為什麼不能選,如果改had done可以嗎?

(38~41) It was too When 39 on the moon, When Sherry was a small child, she enjoyed looking at the night sky far, far above her. She often wondered what lay in the sky In 1969, Sherry watched the astronaut Neil Armstrong step on the moon on TV, the first time in history She 38 wonderful to be true. She was also surprised to see Armstrong and the other astronaut, Edwin Aldrin, walk slowly around the moon, seeing them put a U.S. flag on the moon, she was very proud of her country. After watching what Neil Armstrong Sherry had a dream. She wanted to study the moon and write a book about it when she grew up. In 2011, Sherry was already an excellent scientist who studied the moon. In that year, she finally began working on her first book about the moon. Three years later, The Moon came out. (It was a long dream come true./ Since then, millions of copies 40 At a TV interview last week, Sherry said thank you to Neil Armstrong for his inspiration. “Because of him, I fell in love with the moon,” she said. Sherry is a good example of 41 Today she is also an inspiration to a lot of teenagers in the world, wonderfuit astronaut KN scientist 科學家 Suspiration 激勵(者) 38. (A) was scared of it (B) did not finish watching it (C) couldn't believe her eyes (D) knew everything about the landing had done? 39 (A) has done (C) did 313 (B) is doing (D) would do 40. (A) have sold (C) will be sold (B) were sold (D) have been sold 41. (A) following one's dream (C) saying more than doing (B) an excellent astronaut (D) copying others' dream 14国明有著作1 随着《44 SOLO

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