
初三 (数学+科学+地理)
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7 questions
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1.
OPEN ENDED QUESTION
30 sec • Ungraded
姓名
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2.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
1. 若y依x³正变,且当x=-2时,y=24,以x表示y。
y=-3x³
y=3x³
y=-2x³
y=2x³
3.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
2. 设y依(x-1)²而正变,当x=4时,y=18,求x与y的关系式。
y=(x-1)²
y=2(x-1)²
y=4(x-1)²
y=-2(x-1)²
4.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
3.下列变化属于物理变化的是( )。
用海水晒盐
用食醋除水垢
植物光合作用
食物腐烂
5.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
4. 下列叙述中属于化学变化的是( )。
舞台上用干冰制造云雾
浓盐酸挥发,形成白雾
涂在墙上的熟石灰逐渐变硬
活性炭吸附红墨水中的色素,使其褪色
6.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
5. 下列哪类统计图最能反映一个国家的人口分布状况?
点描图
圆饼图
曲线图
等值线图
7.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
6. 下列对资料整理及加工的方法中,何者合理?
月雨量的变化资料最适合以线状图表现
某地区的月气温变化可用点描图呈现
等雨线图是等值线图的一种
圆拼图可以用来表现人口分布变化
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