人教版数学七年级下册第八章测试卷(含答案).pdf

鍒濅腑鏁板浜烘暀鐗堜竷骞寸骇涓嬪鏈 绗叓绔犳祴璇曞嵎 4 8

涓€銆佸崟閫夐锛堝叡 棰橈紱鍏 鍒嗭級 肀庬饱+肀忢宝=2 肀 =3 肀 =鈭?

1. ( 2 ) { { c { 鍒 鐢蹭箼涓や汉鍚岃В鏂圭▼ 鏃讹紝鐢叉纭В寰 锛屼箼鍥犱负鎶勯敊 鑰屽緱 锛 肀愴饱鈭?肀?8 肀 =鈭? 肀 =2

鍒檃+b+c 鐨勫€兼槸锛 锛 A. 7 B. 8 C. 9 D. 10 3肀モ垝5肀?2肀

2. ( 2 ) x { ( ) 鍒 宸茬煡鍏充簬 锛 鐨勬柟绋嬬粍 锛屽垯涓嬪垪缁撹涓纭殑涓暟鏈 肀モ垝2肀?肀庘垝5 肀 =15

鈶 a=10 { 鈶 x a=20 鈶 a 褰 鏃讹紝鏂圭▼缁勭殑瑙ｆ槸 锛 褰 锛 鐨勫€间簰涓虹浉鍙嶆暟鏃讹紝 锛 涓嶅瓨鍦ㄤ竴涓疄鏁 浣垮緱 肀 =5

x= 鈶 3x-3a=35 a=5 锛 鑻 锛 鍒 A. 1 涓 B. 2 涓 C. 3 涓 D. 4 涓 肀?肀 =2

3. ( 2 ) { 鍒 浜屽厓涓€娆℃柟绋嬬粍 鐨勮В鏄紙 锛 肀モ垝肀 =鈭? 肀 =2 肀 =鈭? 肀 =0 肀 =0 A. {肀 =0 B. {肀 =0 C. {肀 =鈭? D. {肀 =2

4. ( 2 ) 3 20 10 鍒 鏌愭枃鍏峰簵涓€鏈粌涔犳湰鍜屼竴鏀按绗旂殑鍗曚环鍚堣涓 鍏冿紝灏忔槑鍦ㄨ搴椾拱浜 鏈粌涔犳湰鍜 鏀按绗旓紝 36 . 肀 肀

鍏辫姳浜 璁剧粌涔犳湰姣忔湰涓 鍏冿紝姘寸瑪姣忔敮涓 鍏冿紝鍒欙紙 锛 肀モ垝肀 =3 肀?肀 =3 肀︹垝肀 =3 肀?肀 =3 A. {20肀?10肀?36 B. {20肀?10肀?36 C. {20肀?10肀?36 D. {10肀?20肀?36 5 5

浜屻€佸～绌洪锛堝叡 棰橈紱鍏 鍒嗭級 肀モ垝2肀?肀