人教版七年级下册数学6.2《立方根》

1.

立方根等于它本身的有

A．

B．

C．

D．1

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2.

下列说法

是8的立方根；

是64的立方根；

是

的立方根；

的立方根是

，其中正确的说法有

个．

A．1

B．2

C．3

D．4

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3.

下列说法中，正确的是

A．

的立方根是

B．立方根等于它本身的数是1

C．负数没有立方根

D．互为相反数的两个数的立方根也互为相反数

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4.

用计算器计算

，根据你发现的规律，判断

与

为大于1的整数

的值的大小关系为

A．

B．

C．

D．与n的取值有关

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5.

若单项式2x²y^a+b与﹣

x^a^﹣^2by⁵的和仍然是一个单项式，则a﹣5b的立方根为（　　）

A．﹣1

B．1

C．0

D．2

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6.

在实数范围内，下列判断正确的是

A．若，则m＝n	B．若，则a＞b
C．若，则a＝b	D．若，则a＝b

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7.

的立方根是（　　）

A．±2

B．±4

C．4

D．2

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8.

下列说法正确的是

A．立方根是它本身的数只能是0和1

B．如果一个数有立方根，那么这个数也一定有平方根

C．16的平方根是4

D．

是4的一个平方根

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9.

下列计算正确的是

A．

B．

C．

D．

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10.

已知

，

，则

的值是（）

A．24.72

B．53.25

C．11.47

D．114.7

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11.

下列各式有意义的条件下不一定成立的是

A．

B．

C．

D．

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12.

若

＝2，则（2a－5）²－1的立方根是（　　）

A．4

B．2

C．±4

D．±2

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13.选择合适的单词补全短文。

Spring is a beautiful{#blank#}1{#/blank#} of a year. It's from March to {#blank#}2{#/blank#}. A lot of flowers come out. The weather is windy and {#blank#}3{#/blank#}. Spring is the best time to {#blank#}4{#/blank#}trees. I like spring best. {#blank#}5{#/blank#}my birthday is in April. It's on {#blank#}6{#/blank#}18^th . 1 usually have a party {#blank#}7{#/blank#}that day.

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14.选择合适的单词补全短文。

Spring is a beautiful{#blank#}1{#/blank#} of a year. It's from March to {#blank#}2{#/blank#}. A lot of flowers come out. The weather is windy and {#blank#}3{#/blank#}. Spring is the best time to {#blank#}4{#/blank#}trees. I like spring best. {#blank#}5{#/blank#}my birthday is in April. It's on {#blank#}6{#/blank#}18^th . 1 usually have a party {#blank#}7{#/blank#}that day.

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15.选择合适的单词补全短文。

Spring is a beautiful{#blank#}1{#/blank#} of a year. It's from March to {#blank#}2{#/blank#}. A lot of flowers come out. The weather is windy and {#blank#}3{#/blank#}. Spring is the best time to {#blank#}4{#/blank#}trees. I like spring best. {#blank#}5{#/blank#}my birthday is in April. It's on {#blank#}6{#/blank#}18^th . 1 usually have a party {#blank#}7{#/blank#}that day.

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16.选择合适的单词补全短文。

Spring is a beautiful{#blank#}1{#/blank#} of a year. It's from March to {#blank#}2{#/blank#}. A lot of flowers come out. The weather is windy and {#blank#}3{#/blank#}. Spring is the best time to {#blank#}4{#/blank#}trees. I like spring best. {#blank#}5{#/blank#}my birthday is in April. It's on {#blank#}6{#/blank#}18^th . 1 usually have a party {#blank#}7{#/blank#}that day.

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17.

若实数