2013-2014学年初中数学湘教版七年级上第4章练习卷(带解析)

适用年级:初一
试卷号:570721

试卷类型:课时练习
试卷考试时间:2017/8/18

1.单选题(共4题)

1.
若方程的解为-1,则的值为(    )
A.10B.-4C.-6D.-8
2.
某商人在一次买卖中均以120元卖出两件衣服,一件赚25%,一件赔25%,在这次交易中,该商人(  )
A.赚16元B.赔16元C.不赚不赔D.无法确定
3.
三个正整数的比是1∶2∶4,它们的和是84,那么这三个数中最大的数是(   )
A.56B.48C.36D.12
4.
若方程,则等于(    )
A.15B.16C.17D.34

2.选择题(共7题)

5.

阅读理解

    Here is an astonishing and significant fact: Mental work alone can't make us tire. It sounds absurd. But a years ago, scientists tried to find out how long the human brain could labor without reaching a stage of fatigue (疲劳). To the amazement of these scientists, they discovered that blood passing through the brain, when it is active, shows no fatigue at all! If we took a drop of blood from a day laborer, we would find it full of fatigue toxins(毒素) and fatigue products. But if we took blood from the brain of an Albert Einstein, it would show no fatigue toxins at the end of the day.

    So far as the brain is concerned, it can work as well and swiftly at the end of eight or even twelve hours of effort as at the beginning. The brain is totally tireless. So what makes us tired?

    Some scientists declare that most of our fatigue comes from our mental and emotional(情绪的) attitudes. One of England's most outstanding scientists, J.A. Hadfield, says, “The greater part of the fatigue from which we suffer is of mental origin. In fact, fatigue of purely physical origin is rare.” Dr. Brill, a famous American scientist, goes even further. He declares, “One hundred percent of the fatigue of sitting worker in good health is due to emotional problems.”

    What kinds of emotions make sitting workers tired? Joy? Satisfaction? No! A feeling of being bored, anger, anxiety, tenseness, worry, a feeling of not being appreciated---those are the emotions that tire sitting workers. Hard work by itself seldom causes fatigue. We get tired because our emotions produce nervousness in the body.

6.

随着高考的临近,部分住校生要求搬出学生宿舍,在学校附近租房子住。请你根据下表提供的内容,写一篇英语短文,阐述学生和家长的观点,并表达自己的看法。

现象

高三部分住校生搬离学生宿舍,在学校附近租房住

观点

多数学生

1.宿舍吵闹,影响学习和休息2.熄灯制度限定了学习时间

许多家长

1.提供好的学习环境2.方便照顾饮食起居

你的看法

……



注意: 1.陈述所有要点,可适当发挥,不要简单翻译。2.词数120—150(开头已写好,不计入总词数)。3.参考词汇:熄灯制度—blackout rule

    With the college entrance examination approaching day by day, some senior three students are moving out from their dorms and living in a rented apartment near their schools.

7.

随着高考的临近,部分住校生要求搬出学生宿舍,在学校附近租房子住。请你根据下表提供的内容,写一篇英语短文,阐述学生和家长的观点,并表达自己的看法。

现象

高三部分住校生搬离学生宿舍,在学校附近租房住

观点

多数学生

1.宿舍吵闹,影响学习和休息2.熄灯制度限定了学习时间

许多家长

1.提供好的学习环境2.方便照顾饮食起居

你的看法

……



注意: 1.陈述所有要点,可适当发挥,不要简单翻译。2.词数120—150(开头已写好,不计入总词数)。3.参考词汇:熄灯制度—blackout rule

    With the college entrance examination approaching day by day, some senior three students are moving out from their dorms and living in a rented apartment near their schools.

8.

随着高考的临近,部分住校生要求搬出学生宿舍,在学校附近租房子住。请你根据下表提供的内容,写一篇英语短文,阐述学生和家长的观点,并表达自己的看法。

现象

高三部分住校生搬离学生宿舍,在学校附近租房住

观点

多数学生

1.宿舍吵闹,影响学习和休息2.熄灯制度限定了学习时间

许多家长

1.提供好的学习环境2.方便照顾饮食起居

你的看法

……



注意: 1.陈述所有要点,可适当发挥,不要简单翻译。2.词数120—150(开头已写好,不计入总词数)。3.参考词汇:熄灯制度—blackout rule

    With the college entrance examination approaching day by day, some senior three students are moving out from their dorms and living in a rented apartment near their schools.

9.

With the loss of labor,the old farmers ________at home had to choose less labor­intensive crops.

10.

With the loss of labor,the old farmers ________at home had to choose less labor­intensive crops.

11.

With the loss of labor,the old farmers ________at home had to choose less labor­intensive crops.

3.填空题(共3题)

12.
如果,那么= .
13.
如果|a+3|=1,那么a=_______
14.
已知方程的解也是方程的解,则=_________.
试卷分析
  • 【1】题量占比

    单选题:(4道)

    选择题:(7道)

    填空题:(3道)

  • 【2】:难度分析

    1星难题:0

    2星难题:0

    3星难题:0

    4星难题:0

    5星难题:0

    6星难题:1

    7星难题:0

    8星难题:0

    9星难题:6