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A Iris: OK. I will finish doing it. I just need ten more minutes. (A) has to do (B) has done t 8. Jean: See? Razor runs much (C) has to be done (D) has been done now. Can you think of any other boys in our class that can run as fast as him or even faster than him? More Lisa: I'm not sure. But I think he is able to join our school team. (A) fast (B) faster (C) as fast runs faster much fast (D) the fastest

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B 23. 圖(土)的LI~LS為五條等距的平行線,且O、M分別在 L3、LS 上,大奕以O點為圓心,OM 長為半徑畫圓,分 別與此五條平行線交於P、Q、R、S、N五點。根據圖 N S R L3 La √Q 中各點的位置,判斷OR、RS、SN的度數大小關係為 何? Ls M 圖(土) (A) QR<RS<SN (B)QR=RS<SN (C)QR<RS=SN (D)QR=RS=SN

想請問這題，是清大先修課（微積分）的題目！ 有點看不太懂詳解⋯⋯ 非常感謝！><

微積分 w1 ex02-01q3 (單選題) Let f (x) = 2x, c = 1, = 0.1, L = 2, pick up an appropriate positive number 8 from the following options such that if 0 < |x − 1| < 8, then |f(x) − L| = |2x − 2| < € = 0.1. ○ 8 = 4 O 8 = 0.049 8= 0.051 8 = 0.1 解答: "8=0.049 " 詳解: Observe that | 2x-21 = 2|x1| < 0.1 = >> |x1|< 0.1 = 0.05. 2 Hence for &= 0.1, we can take any positive number 8≤ 0.05, such that if 0 < |x − 1| < 8, then |f(x) – L| = |2x-2| 2x 128≤ 2 0.05 = 0.1 = ε.

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佰法①過O作直線LLOA 在L上取OB=3OA,連接AB ③以O為圓心,AB長為半徑畫弧, 與數線正向交於P點,則P即為所求 B P 牛刀小試 1. 如右圖,坐標平面上,已知O(0,0)、A(17,0)、P(12,9)三點,則: (1)以為圓心,OP為半徑畫弧,交y軸於B點,則B點坐標為 (0,15) (2)以P為圓心,PA為半徑畫弧,交x軸於C點,則C點坐標為 0 P(12,9) O(0,012 (17,0) 5. 右圖 步驅 步馬 步需 步

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8. Lisa: Dad, we have to go to church tomorrow, ? Dad: Yes, tomorrow is Saturday. After that, let's go to a movie. A) haven't we (C) won't we have to (B) aren't we (D) don't we

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B 6. Anita enjoys watching the waves break against the rocks, and so BB 918 2 I. (A) do (B) am (C) will (D) have 1295 ever been to South Korea, and his children.

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牙 9. Everyone was talking about Jasmine at the party last night because she dressed than all the other girls. 2m() (A) beautiful 20 om nogoo of og of tow llite 1 di biofle 'n I (B) more beautiful 11(A) (C) more beautifully (D) the most beautifully 192010 (A)

國二數學

m-Calc ... Copper panediol)。 ament (Chlorphenes cassium)、Aqu 5外生物科技(股)公司 七-75ソ二ソ5(株) 店區中正路495號7樓 份有限公司 $150號13樓之5 188 三、非選擇題-說明與計算:每題10分,共40分 《國中實力評量·數學4》—18 1. 如右圖 3. 如右圖,正方形 9 △ABC中,∠B=90°,AC= 25 L E 15 25,AB=15,直線L為AC 的中垂線, 且交BC於D點,則BD=? 【解】 20 B =DF,則: (1) 說明△AEF (2)若∠BAE: 少平方單 【說明】

這題為什麼選B

7. It has not rained for weeks. The weather report says that there may (B) tomorrow. (A) rainbow (C) be rainy (B) be rain (A) EA (D) have rain (8) zi gnidouot lls jon ()

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WOLKS there. 【弘道 mes 興】 B (A) slow; noisy slow; noisily 17. The Chinese boy often 【海山】 (B) slowly; noisy (D) slowly; noisily in the library; he's a really wonderful student. (A) studying hard (B) studies hard 18. A: You paint the eggs so BA library; BUJOR MAXE (C) studies hardly (D) study hardly ! Can I take a look at them? B: Sure. These eggs are for Easter. Be careful (A) beautiful; don't well; not to 【石牌】 drop the eggs. (B) well; don't (D) beautifully; not $ 19. 19. Study and you will go to a good school. 【古亭】 (A) hardly (B) hard (C) careful (D) hardest A 20. We play volleyball We need more practice. 【海山】 (A) badly (B) well (C) terrible (D) hardly h 21. Vicky: Did you win the game last night? 【金菜】