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初三 (数学+科学+地理)

Authored by Shin Tuition

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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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