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• 3. (甲) y＝2－x2 (乙) y＝ (丙) y＝2x＋1 (丁) y＝2＋x＋x2，以上四個函數中，哪些是x的二次函數？(A)甲乙(B) 丙丁(C)甲丁(D)甲乙丁
• 4. 二次函數y＝x2－10x的最大值或最小值為多少？(A)最大值－10(B)最小值－25(C)最小值－10(D)最大值－25
• 5. 下列哪一個二次函數的圖形和y＝4x2－8x的圖形有相同的頂點？(A) y＝－2(x－1)2－4 (B) y＝－2(x＋1)2 (C) y＝2(x＋1)2＋4 (D) y＝2x－4x
• 6. 下列哪一個二次函數的圖形和x軸沒有交點？ (A) y＝－( x－2 )2＋1(B) y＝2x2－1(C) y＝－x2＋1(D) y＝－2x2－1
• 7. 若二次函數y＝x2＋ax＋b的圖形與x軸交於(－3 , 0 )、( 7 , 0 )兩點，則其對稱軸方程式為何？ (A) x＋2＝0(B) x－2＝0(C) x＋3＝0(D) x－7＝0
• 8. 有四個二次函數y＝x2、y＝ x2、y＝－x2、y＝－ x2，如右圖所示，則標示為B的是哪一個二次函數的圖形？ (A) y＝x2 (B) y＝ x2 (C) y＝－x2 (D) y＝－ x2
• 9. 嘉明想用100公尺長的鐵絲圍成一矩形花圃，則所圍成花圃的最大面積為多少平方公尺？ (A)400(B)600(C)625 (D)2500
• 10. 右圖為二次函數y＝ax2＋bx＋c的圖形，則下列敘述何者正確？ (A) a＞0，c＞0，b2－4ac＞0(B) a＜0，c＞0，b2－4ac＜0 (C) a＞0，c＜0，b2－4ac＞0(D)
• 11. 關於二次函數y＝－2(x－1)2＋2圖形的敘述，下列何者錯誤？(A) 其圖形的頂點坐標為(－1 , 2) (B) 其圖形為一拋物線(C) 其圖形的對稱軸為x＝1(D) 其圖形的開口向下
• 12. 若二次函數f ( x )＝－999 ( x－199 )2＋799，則下列選項哪一個函數值最大？(A) f ( 100 )(B) f ( 200 )(C) f (－100 )(D) f (－20
• 13. 用配方法將y＝－2x2＋12x＋1化成y＝－2(x＋h)2＋k的形式，求h＋k＝？(A)－20(B)21(C) 16(D) －15
• 14. 將二次函數y＝x2＋5的圖形描繪在坐標平面上，再沿著直線y＋2＝0向下摺疊，並將摺疊後的圖形描繪一次，則所得到的痕跡是下列哪一個二次函數的圖形？(A) y＝x2－5 (B) y＝x2－9 (C
• 2. My teacher always gives me some__________about my studies, and it brings me a new life. I couldn’
• 3. It was tiring. We had to go to school every day__________Sunday two weeks ago. We went to school
• 4. Nick: I __________ at 5a.m. Pete: Wow! So early! But why were you still late for school today?(A)
• 5. Doctor:__________Beauty: Doctor, you have to help me. I have a headache. I can’t sleep at night.(
• 6. We love our dad, so we plan to__________on Father’s Day. I hope he will love it.(A) make a cake f
• 7. Selina __________because of the fire five months ago, but she still tries to do exercise every da
• 8. Jay: I can’t do it. Please help me. Joy:__________(A) That’s great. (B) I can’t wait.(C) Be caref
• 9. A: When__________you usually go to bed?  B: Before ten. But I __________ o bed at 12 last night,
• 10. Ouch! It hurts.__________(A) I had a fever.(B) I broke my finger.(C) I have to brush teeth.(D) T
• 11. Patrick: Did you__________last night?  SpongeBob: No, I__________home. I ate in a restaurant.(A)
• 12. It is sunny today. __________ Let’s go to the beach. Maybe we can walk on the beach hand in hand
• 13. Be careful __________ .(A) because he was very full(B), so we were happy(C) and you are in the h
• 14. __________ , so she can drive to work every day.(A) Mr. Chen gave a bike to her daughter(B) Ms.