工程建设标准文本中除去斜体字的条款均为推荐性条款。

沿着长5米高1米的斜面匀速把重力为1×10⁴牛顿的物体推上汽车，斜面效率为80%，则推力为______牛顿．

阅读理解。

    Is there someone you hate? Well, maybe you don't really hate them. But you get really

angry every time you think of them. If you don't let this anger go, it can turn into

bitterness (痛苦).

    Bitterness appears when we can't forgive (原谅) someone who has hurt us or made us

angry. Someone might say or do something that hurts us. But instead of controlling the

anger, we keep it beep inside. Before long, a bitter feeling begins to grow. We may think

we're hurting that person by criticizing (指责) him or her often, but we're really only

hurting ourselves.

     Bitterness can not only lead to serious health problems such as heart disease, but

also hurt our relationships with friends and family members. No one enjoys being around

an angry person for very long.

    If you see bitterness in your life, here are some ways to deal with it. 

   ·Accept it

    Instead of trying to deny your anger, make it clear to yourself and accept it. See

your anger

   ·Stop making excuses for it

    You may feel you have a right to be angry.

    You may think you're right and the other person is wrong. You may even secretly enjoy

making the other person look bad. But in the end, bitterness hurts you much more than the

other person. The bitterness will hold you back, and the other person will go on with his

or her life.

   ·Forgive and forget it

    You probably can't completely put the anger out of your mind. But you can decide to

forgive the other person. Forget it and move on. You'll enjoy better heath and peace of

mind.

1. According to the passage, we might get angry when someone _____. [ ]

A. holds us back

B. forgets us

C. doesn't like us

D. does hurt us

2. Bitterness comes from _____. [ ]

A. our health problems like heart disease

B. the anger that lives deep inside our mind

C. the person who says something that hurts us

D. our relationships with friends and family members

3. The underlined word "deny" in the passage means "_____". [ ]

A. 误解

B. 否认

C. 疏远

D. 减轻

4. The best way to deal with the bitterness is to _____. [ ]

A. make the person who hurts us look bad

B. hate the person who hurts us very often

C. accept that you are hurting the other person

D. forgive the person who hurts us and forget it

5. What can we learn from the passage? [ ]

A. We should enjoy someone who hurts us.

B. We should pay more attention to our friends.

C. The peace of mind is more important than the hurt itself.

D. It's better to let bitterness go along with the other person.

提取下面一段话的主要信息，在横线上写出三个关键词。(3分)

专家研究表明，随着年龄的增大，脸部会出现皱纹，这是脸部骨骼萎缩造成的，而不是皮肤本身的变化。研究人员对60名年龄在25～65岁之间男女的面部骨骼进行分析，结果表明，每当面部的一部分骨骼溶解，骨量紧缩后，就会在皮肤下面留下空隙，进而出现皱纹。

答：____ ________，____________，____________。

当输入额定电压，变压器空载时，其二次端子电压的误差不大于端子额定电压值的±（）%。

A、3

B、4

C、5

D、6

的值是（）

A.

B.

C.

D.