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• 19.下列敘述何者正確？(A)若a＞b，則｜a｜＞｜b｜ (B)若ac＞bc，則a＞b(C)若｜a｜＜｜b｜，則a2＜b2(D)若a＞b，則－a＞－b
• 2. 珍珠班上有九位同學，他們的體重資料如下： 58，54，47，41，49，48，45，47，52。(單位：公斤)關於此資料的中位數與眾數的敘述，下列何者正確？(A) 中位數為 49 (B) 平均數
• 3. 六個數由小排到大，已知六數之平均數為 25，若前二數之平均數為 12，後二數之平均數為 35，則中位數為何？(A) 28 (B) 29 (C) 30 (D) 31
• 4. 下列何者為二元一次方程式？(A) 3x＋2y＋32 ＝10 (B) 3x＋2 y＋3＝3(x＋y)－7 (C) 3x＋2y＋3 (D) 3x2 ＋2y＋3＝10
• 5. 黃金和二哈現在的年齡分別是 x、y 歲，且 x、y 的關係式為 3(x＋2)＝y，請問下列敘述何者正確？(A) 兩年後，二哈的年齡是黃金年齡的 3 倍(B) 黃金現在年齡是二哈兩年後的 3 倍(
• 6. 多多和大大一起到早餐店，多多買了 3 個包子和 7 個饅頭共付 66 元，大大買了 7 個包子和 3 個饅頭共花了 74 元，試問一個包子比一個饅頭貴多少元？(A) 2 (B) 3 (C) 4
• 7. 若 x＝3、y＝2 是 ax－b y =12 的一組解，則 15a－10b＋12=？(A) 24 (B) 37 (C) 60 (D) 72
• 8. 解二元一次聯立方程式 時，下列哪一個步驟可以消去未知數 y？(A)① ×4－②×3 (B)①×4＋②×3 (C)①×3＋②×2 (D)①×3－②×2
• 9. 投籃比賽中，參賽者在限定時間內能隨意投 2分球或 3分球。今多多代表班上參加比賽，裁判跟他說：「總共投進 15顆球，得 36分。」，則多多共投進幾顆 3分球？(A) 3 (B) 6 (C) 9
• 10. 甲、乙、丙、丁四人分別計算二元一次式的化簡，請問計算錯誤的有幾個人？甲：5(2x－5y)＝10 x－5y乙：－5x＋4 x＋7y＝－x＋7y丙：－(－2x＋3y－5) ＝2x－3y＋5丁：2(
• 三、 計算題：1. 已知 的解為 x＝2、y＝－1，求 a 與 b 的值。編輯私有筆記及自訂標籤國一數學下第一次-108 年 - 2019彰化縣縣立埔心國中七年級108 下學期數學第一次段考(期中考)
• 17. Judy moved to Japan and ______ there for many years. I miss her so much.(A) lives (B) has lived
• 18. Grace and her sisters like playing badminton , and ______ Alice. They always playbadminton toget
• 19 John：Can I have a glass of water? I’m thirsty because I just ran twenty miles. Gina：Sure. Here __
• 20. Ms. Lin：Students have to take the math test today. But it is not hard. They can do wellon the te
• 21. Stanley has twin sisters. ______ has long hair, and ______ has short hair.(A) One; another (B) A
• 22. Eric dreamed of ______ a doctor when he was little. He studied hard and never gave______. Now, h
• 23. The math test is difficult. Jane didn’t do well on it, and ______ Alex. He is not good atmath, _
• 24. The teacher asked the students ______ and be careful ______ the works of art in themuseum.(A) no
• 25. Danny：I called your sister, Lily, last night, but she didn’t answer. Was she studying? Amy：No, s
• 26. The old building was a library, but it is empty(空的) now. The building has a long history.It ____
• 27. The light was on. Bonnie asked her husband to turn ______ before he left the house, buther husba
• 28. Mom：Here’s your coat. ______ Son：But the sun is shining brightly outside. Mom：Better safe than s
• 29. But since he changed jobs, he has been too busy to do that.(A) Working hard is in Mike’s blood.
• 30. Frank：Did you know that Peter had quit(辭掉) his job? Peggy：Yes, I did. Frank：No wonder. The last