甲、乙两数之差100是,甲数是a,表示乙数的式子是( ) A.100-a B.a-1

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问题:

甲、乙两数之差100是,甲数是a,表示乙数的式子是(  )
A.100-aB.a-100C.无法确定
考点:用字母表示数
题型:选择题

轮式的功效()

A.促进血液循环,增强脊柱弹性和健康

B.改善经期身体和精神上的疲乏和不适

C.保持头脑清爽,感觉敏锐

D.减缓经期身体的不适

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文中共有10处错误,每句中最多有两处。错误涉及一个单词的增加、删除或修改。

增加:在缺词处加一个漏词符号(^),并在此符号下面写出该加的词。

删除:把多余的词用斜线(\)划掉。

修改:在错的词下面画一横线,并在该词下面写出修改后的词。

注意:1.每处错误及其修改均仅限一词。

2.只允许修改10处,多者(从第11处起)不计分

Rose wanted a job. She went to many offices and she didn’t like any of them. One day she saw a board in an office read: “This office needs a typist whom can type 200 words a minute.” Rose was exciting. When Rose went to the manager’s office, the man was writing something. Rose knocked at the door and the manager raised her head. “Do you need a typist?” asked Rose. “Yes!” he said. Rose clapped her hand. She couldn’t help saying, “OK! How much will you pay for me every month?” The manager thought for a while and said, “I will pay you 77 dollars for first three months. Then I will pay you 30 dollars every month.” Rose smiled and answer, “Great! I will come and work here three months late.” The manager was speechless.

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下列有关水的说法正取的是 [ ]

A、水是由两个氢元素和一个氧元素组成

B、水分子中氢原子和氧原子的质量比为2:1

C、固体NaOH溶于水能形成溶液并放出热量

D、在稀释浓硫酸时,应将水慢慢加入浓硫酸中

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直流电机电刷由哪几部分组成?

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自治区联社党委开展科学发展观活动的主题是什么?

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