问题 单项选择题

经常发生振动的管道,能使法兰的连接螺栓松动,垫片上的()下降,还会使管道焊缝内的缺陷扩展,最终导致严重的泄漏事故。

A.密封比压

B.厚度

C.耐压性

D.耐油性

答案

参考答案:A

单项选择题
阅读理解

Directions: Read the passage carefully. Then answer the questions or complete the statements in the fewest

possible words.

     There's worrying news for any parent who's struggled with a headstrong young child. Some scientists

recently claim that children who have low levels of self-control, which is the earliest demands that society

places on children, at the age of three are more likely to have health and money problems and a criminal

record by the age of 32, regardless of background and IQ. That is to say, willpower as a child really does

influence your chances of a healthy and wealthy adulthood.

     They found that children with low self-control were more likely to have health problems in later life

including high blood pressure, being overweight, breathing problems and sexually transmitted infections.

They were also more addicted to substances such as tobacco, alcohol and drugs, more likely to be single

parents, have difficulty managing money and have criminal records.

     Researchers from Britain, the US and New Zealand analyzed data from two large studies in which

children completed a range of physical tests and interviews to assess genetic and environmental factors

that can shape their lives.

     The participants' self-control was assessed by teachers, parents, observers and the children themselves

and included things like having low frustration tolerance, lacking persistence in reaching goals, being over-

active and acting before thinking.

     Researchers then found that when the participants reached their early 30s, this impulsivity and relative

inability to think about the long-term gave them more problems with finances, including savings, owning a

home and credit card debt.

     The findings were published in the Proceedings of the National Academy of Sciences journal.

(Note: Answer the questions or complete the statements in NO MORE THAN TWELVE WORDS.)

1. What are the findings of a recent research according to the passage?

    ____________________________________________________________________________________

2. The phrase "more addicted to" (Line 3, Para. 2) probably means "____________".

3. Besides poor anti-frustration ability, over-activeness and fore-acting, children with low self-control may

    also suffer ____________.

4. What may primarily cause the financial problems of the children with low self-control in their later years?

    ____________________________________________________________________________________