瀛︿範蹇呭
娆㈣繋涓嬭浇
鍏勾绾?/p>
(
涓?/p>
)
鏈熶腑璇曞嵎
涓�銆佸～绌洪锛?/p>
3
鈥裁?/p>
8=24
鈥诧級
1
銆侀�変竴涓綘鍠滄鐨勫悎鐞嗙殑瀹炴暟
x
锛屾眰浜屾鏍瑰紡
1
2
x
飥?/p>
鐨勫�硷紟鍙?/p>
x=
锛?
1
2
x
飥?/p>
=
锛?/p>
2
銆?/p>
宸?/p>
鐭?/p>
鍏?/p>
浜?/p>
x
鐨?/p>
涓�
鍏?/p>
浜?/p>
娆?/p>
鏂?/p>
绋?/p>
2
0
ax
bx
c
飥?/p>
飥?/p>
飥?/p>
(
0
)
a
飩?/p>
鐨?/p>
涓�
涓?/p>
鏍?/p>
涓?/p>
1
飥?/p>
锛?/p>
鍒?
a
b
c
飥?/p>
飥?/p>
飥?/p>
锛?/p>
3
銆佺粺璁″叓骞寸骇閮ㄥ垎鍚屽鐨勮烦楂樻祴璇曟垚缁?/p>
,
寰楀埌濡備笅棰戞暟
鍒嗗竷鐩存柟鍥?/p>
(
濡傚浘
,
鍥句腑鐨勮烦楂樻垚缁╃殑鏁版嵁涓虹粍涓�?/p>
),
鍒?/p>
璺抽珮鎴愮哗鍦?/p>
1.29m
浠ヤ笂鐨勫悓瀛︿及璁″崰鍏勾绾ф�讳汉鏁扮殑鐧?/p>
鍒嗕箣鍑?/p>
?
绛?/p>
:
锛?/p>
(
绮剧‘鍒?/p>
1%,
娉ㄦ剰姣忎竴缁勫寘鎷乏绔?/p>
鐐硅�屼笉鍖呮嫭鍙崇鐐?/p>
)
4
銆佽嫢
x
銆?/p>
y
鍒嗗埆鏄?/p>
8
11
飥?/p>
鐨勬暣鏁伴儴鍒嗕笌灏忔暟閮ㄥ垎锛屽垯
2
2
xy
y
飥?/p>
=
锛?/p>
5
銆佹妸鍛介鈥滃钩琛屼簬鍚屼竴鏉＄洿绾跨殑涓ょ洿绾垮钩琛屸�濇敼鍐欐垚鈥滃鏋溾�︹�﹂偅涔堚�︹�︹�濈殑
褰㈠紡涓?/p>
:
锛?/p>
6
銆?/p>
鑻?/p>
涓�
鍏?/p>
浜?/p>
娆?/p>
鏂?/p>
绋?/p>
2
(2
1)
0
kx
k
x
k
飥?/p>
飥?/p>
飥?/p>
飥?/p>
娌?/p>
鏈?/p>
瀹?/p>
鏁?/p>
鏍?/p>
锛?/p>
閭?/p>
涔?/p>
k
鐨?/p>
鍙?/p>
鍊?/p>
鑼?/p>
鍥?/p>
锛?/p>
7
銆佸皢杩涜揣鍗曚环涓?/p>
40
鍏冪殑鍟嗗搧鎸?/p>
50
鍏冨嚭鍞椂锛岃兘鍗栧嚭
500
涓紟宸茬煡杩欑鍟嗗搧姣?/p>
涓定浠?/p>
1
鍏冿紝
鍏堕攢鍞噺灏卞噺灏?/p>
10
涓紝
鍒欎负浜嗚禋寰?/p>
8000
鍏?
鐨勫埄娑﹀敭浠峰簲瀹氫负
锛?/p>
8
銆佸凡鐭ワ細濡傚浘锛岀洿绾?/p>
AB
鈭?/p>
CD
锛岀洿绾?/p>
EF
鍒嗗埆浜?/p>
AB
锛?/p>
CD
浜?/p>
鐐?/p>
E
銆?/p>
F
锛?/p>
鈭?/p>
BEF
鐨勫钩鍒嗙嚎涓庘垹
DEF
鐨勫钩鍒嗙嚎鐩镐氦浜庣偣
P
锛?/p>
鍒?
鈭?/p>
P=
锛?/p>
浜屻�侀�夋嫨棰橈紙
3
鈥裁?/p>
10=30
鈥诧級
9
銆?/p>
鈥?/p>
I am a good student.
鈥濊繖鍙ヨ瘽涓紝瀛楁瘝鈥?/p>
a
鈥濆嚭鐜扮殑棰戠巼鏄紙
锛?/p>
A.2 B.
2
15
C.
1
18
D.
1
11
10
銆佹娊鏌ヤ簡
20
鍚嶅鐢熸瘡鍒嗛挓鑴夋悘璺冲姩娆℃暟锛岃幏寰楀涓嬫暟鎹紙鍗曚綅锛氭锛?/p>
81
锛?/p>
73
锛?/p>
77
锛?/p>
79
锛?/p>
80
锛?/p>
78
锛?/p>
85
锛?/p>
80
锛?/p>
68
锛?/p>
90
锛?/p>
80
锛?/p>
89
锛?/p>
82
锛?/p>
81
锛?/p>
84
锛?/p>
72
锛?/p>
83
锛?/p>
77
锛?/p>
79
锛?/p>
75
浠?/p>
5
娆′负缁勮窛鍒嗙粍锛岀粯鍒堕鏁板垎甯冭〃鏃讹紝棰戠巼涓?/p>
0.45
鐨勪竴缁勬槸锛?/p>
锛?/p>
A.72.5
锝?/p>
77.5 B.77.5
锝?/p>
82.5 C.82.5
锝?/p>
87.5 D.87.5
锝?/p>
92.5
11
銆佷笅鍒楀悇鏁板垎鍒笌
(2
3)
飥?/p>
鐩镐箻
,
缁撴灉涓烘湁鐞嗘暟鐨勬槸
(
)
A.
3
B.
2
3
飥?/p>
C.
2
3
飥?/p>
D.
2
3
飥?/p>
飥?/p>
12
銆佸彲浠ョ敤鏉ヨ瘉鏄庡懡棰樷�滀换浣曞伓鏁伴兘鏄?/p>
8
鐨勫�嶆暟鈥濇槸鍋囧懡棰樼殑鍙嶄緥鏄細鍙栬繖涓暟
涓猴紙
锛?/p>
20
13
13
8
1.44
1.34
1.24
1.14
20
16
12
8
4
0
璺抽珮鎴愮哗
(m)
棰戞暟锛堜汉锛?
P
F
E
D
C
B
A