請問這題是如何得知是相似三角形的呢？ 謝謝❤️

3.在坐標平面上,有一個邊長為6單位的正方形 OABC,如圖(一)所 示。若阿仁在點P(0,4)處朝x軸彈一顆彈珠,彈珠碰到點Q(2,0)後 向上反彈到線段 BC 處,不考慮其他外力干擾之下,彈珠在點 R(a,b)處碰到線段BC,則a+b之值為何? (A)9 (B) 10 (C) 11 (D) 12 Ans : (c) 025 b) C2 P B Pa(4) F 圖(一) 共 有 本 一 s Q x

想問一下這題怎麼解，謝謝🙏🏻

-1 第6、7.題為題組 「遭光之攜折M 如右圖所示,小強操作「雙狹縫干涉」實驗,將一圓點狀的雷射 光束對準雙狹縫的中心處垂直雙狹縫入射,並在遠處 AB 紙屏上,觀 察雙狹縫干涉所呈現的條紋。 () 6. 小強所見到的干涉條紋應為下列何者?區】 (A) A B HBA B (C) A B DA 雷射 雙狹縫 照射方向 BEA 造

問問！！！

(A) such as (B) and that the sleeping baby gently in the crib, the mother left the room as quietly as she could in HubA (8 border not to wake him up. C (A) Laid 0222M 002TM 0881 (B) Lied 0282TM ISR-MOM (C) Laying zveblloh» brasW (D) Lying crib 嬰兒床

求解！！！

(A) got (B) left (C) taken lies ahead in the future. I am excited to work with you, and I look forward to (A) that (B) which (C) how B19. To our surprise, the principal announced that our class won first prize broke the school's historical records. (D) what our perf

請問這題數學，我的思路是正確的嗎？ 謝謝❤️

已知f(x)= 3x+2x2 ,求limf(x)。 5 • x=2 :2 X-2 /im x>2+ fim 皆≠2 6+2 #72 5 Ans : 8 f(x) = 8 Im

請問為什麼紅筆劃記的地方，x=1代入分子，就會等於0呢？ 謝謝❤️

已知lim I<x 2 x² + ax + b x-1 3,求axb之值。 令x=1代入分子 Ht+a+b=d b=-a-1 I'm x²+axat=3 x→ 1 hr x71 XY (x+1)(x+1)+4(x-4). (X) 2+α=3 a=1 b=-2

求解第七題為何用ing

S B Cute animal; she's also a symbol of hope for her endangered species. 6. A. truthful C. forgetful # B7. to DA A. to splash C. splashing 8. A. Similar with C. Aside from C9. A. bring an end to C. make the most of 10. A. wildlife A₁ C. privacy B. adorable 可愛的 D. portable 輕便的 B. splashed D. has splashed B. Instead of D. Thanks to 避難所 B. seek refuge in D. reduce the need for I 閱讀能力測驗:閱讀理解 B. border D. consumer H 18

求解第七題為何用ing

S B Cute animal; she's also a symbol of hope for her endangered species. 6. A. truthful C. forgetful # B7. to DA A. to splash C. splashing 8. A. Similar with C. Aside from C9. A. bring an end to C. make the most of 10. A. wildlife A₁ C. privacy B. adorable 可愛的 D. portable 輕便的 B. splashed D. has splashed B. Instead of D. Thanks to 避難所 B. seek refuge in D. reduce the need for I 閱讀能力測驗:閱讀理解 B. border D. consumer H 18

求解，謝謝！！

2. Grandpa fell asleep on the sofa with a newspaper_ (A) covered (B) to cover his face. (C) to be covered (D) covering

想請問一下第六、九題 就是為什麼第六題的選項不能以A當作助動詞來選

B.A.. 7. 8. 7.0. AnD used to be describing My parents were very strict with us. We (A)dared not to lie (used to be described to them. Sidn (Bodidn't dare to lie (C)didn't dare lying (D)dared not lied ) Polina has three pets. One is a dog, A)other; others another; still other After David was caught (A)to cheat it was. (B)cheated is a cat, and is a rabbit. (B)the other; still other (D)another; the other on the exam, he was punished by the teacher. (C)cheating (D)cheats borrowed the novel from me last month, but the problem is that I don't remember who (A)A friend of mine The friend of mine (B)A friend of my (D)Some of my friends