問題詳情
16. 如圖(十六)，有個人站在 A 處，透過平放在地面上 B 處的鏡子，恰可看到 C 處的樹頂，若 
＝2，眼睛離地面 1.5，則樹高＝？
(A) 1.5
(B) 2
(C) 2.5
(D) 3
參考答案
無參考答案
內容推薦
- 如圖(十四)，梯形 ABCD 中， ，兩對角線 交於 E 點，若 ＝1， ＝2，則△ADE 面積： △ABE 面積： △BCE 面積＝？ (A) 1： 1： 2 (B) 1： 2： 4 (C
- 已知 ，請問a. b . c三數大小關係為？(A) a >b >c (B) a> c> b(C) c> a >b (D) c> b >a
- 已知一直角三角形兩股長分別為 49 和168，則斜邊長為？ (A) 175 (B) 185 (C) 195 (D) 217 。
- 小翔有 公分五種長度的竹籤且每種各一枝，請問小翔可以將這五枝竹籤排出幾種不同(三邊等長的三角形視為同一種)的直角三角形？ (提示：三邊長滿足畢氏定理的三角形，即為直角三角形) (A)一種 (
- 已知 x2+ax+b=(x+p)(x+q) ，其中 p✖ q 0， 則下列選項何者正確？(A) a > 0且b > 0 (B) a > 0且b > 0 (C) a
- 下列步驟是小翔在將4(x-1)- (1-x2 )因式分解的過程，請問分解的過程中是否有誤？步驟一：將(1 -x )2調整成( x -1)2，原來的式子變為4(x-1)-(1-x)2 。步驟二：
- 如圖(十三)，直角△ABC 中， ∠BAC＝90°， 上的高，若 的長度為何？ (A) 1 (B) 2 (C) 3 (D) 4
- 請問下列何者為 的同類方根？ (A) (B) (C) (D) 。
- 如圖(十二)， △ABC 中， 的長度＝？ (A) 1 (B) 5 (C) 2 (D) 5
- 如圖(十一)， D 為 之中點， ，若△BCE 面積為 1，則△ABC 面積為何？ (A) 5 (B) 6 (C) 7 (D) 8
內容推薦
- The old man is easy to get angry. No one can _____ him.(A) fall down (B) go through (C) put up wi
- In Canada, many people _____ on frozen lakes in winter.(A) shape (B) skate (C) spill (D) spell
- When you use a _____ knife, be careful and don't hurtyourself.(A) helpful (B) sharp (C) wild
- The Earth is a(n) _____, and it moves around the Sun.(A) area (B) dot (C) flute (D) planet
- Ivy wants her children to get closer to _____, so she oftentakes them to go hiking in the mountai
- Ada: Why are you still here? It's already 11:30 p.m.Ben: Because I _____ my work. Don't
- We've known each other since he _____ here 10 years ago.(A) moved (B) has moved (C) is movin
- Yesterday morning, I helped my brother not only _____ hiscar but also mop the floor.(A) washed (B
- She agrees _____ more vegetables is good for her health.(A) eating (B) eats (C) that to eating (
- Many of my classmates have had the experience of taking anairplane, but I _____.(A) didn't
- There were lots of fish in this river before, _____?(A) were they (B) weren't there (C) wer
- _____, doesn't she?(A) She has to leave the office earlier today(B) She never goes to schoo
- Betty: I got a bad grade on the math test today. Yesterday, Iasked Jeff many questions about mat
- Gina: Are you and Peter dating?Amy: No, I'm not. _____(A) What a small world!(B) I'm g
- Denny: _____Emily: Yes. They really have fun playing in the water, andmany kids come here for do
- 【題組】(A) has taken (B) took (C) takes (D) is taking
- 【題組】(A) playing (B) played (C) to play (D) have played
- 【題組】(A) walk (B) walking (C) were walking (D) have walked
- 【題組】(A) will get (B) get (C) got (D) am getting
- 【題組】(A) boring (B) bored (C) bores (D) bore
- 【題組】(A) interest (B) interested (C) be interested (D) be interesting
- 【題組】(A) scare (B) scares (C) scared (D)scary
- 【題組】(A) surprise (B) surprising to (C) surprises (D)surprised at
- 【題組】(A) are (B) is (C) be (D) have been
- 【題組】(A) more (B) most (C) less (D) much