冲击试验常用的标准冲击试样有哪两种？（） A.圆拉伸试样 B.板拉伸试样 C.U型缺

协议公司客人上门入住未带名片，可由（）在《临时住宿登记单》上签字确认协议价格。

井下水力活塞泵的投泵操作应如何进行？

综合个人责任险是代替被保险人支付法律上应该由被保险人支付的、由于身体伤害或者财产损失而造成的损失。虽然保险协议涵盖范围非常广泛，但它也仍然要受特定免除的限制。综合个人责任险一般不包括如下风险（）。

A.商业或者职业追求

B.汽车、大型船舶和飞机的所有权、维护或者使用

C.被保险人有意引起的伤害或者损坏

D.医疗费用支付

E.根据所有工伤补偿法的规定应该支付的保险金

阅读理解

    A university math tutor has discovered the science behind "singledom",finding that our chances of finding

the perfect partner are just 1 in 285,000.Peter Backus,a tutor at the University of Warwick,published his

"Why I Don't Have a Girlfriend" paper after a threeyear love drought.

    His unconventional study uses a famous math formula called The Drake Equation (德雷克等式),which

was first used to estimate the existence of extraterrestrial (地球以外) life.

    The results don't look promising for British singles.30yearold Mr Backus found that out of the 30 million

women in the UK,only 26 would be suitable girlfriends for him.

    The dull equation takes into account the number of  women aged  24  to 34, living in his home city of

London,and who are single,meaning his chances of meeting his dream woman on a night out are slim.

    The economics expert said: " There are  26 women in London with whom I  might have a wonderful

relationship.So, on a given night out in London there is a 0.0000034%  chance of meeting one of  these

special people.That's a 1 in 285,000 chance,so it's not great."

    The puzzling Drake equation reads: N＝R* x Fp x Ne x Fi x Fc x L,and helped pioneering scientist

Professor Drake to predict that there could be 10,000 civilizations in our galaxy.

    Mr Backus simply replaced the original equation with his own criteria for a dream date,which included

the percentage of women likely to find him attractive,and the number of girls aged 24～34 in London.He

said:"The research may sound depressing to people looking for love,but the_good_news_for_singles is,it's

probably not your fault!"

1．Mr Backus' discovery in this passage is mainly concerned about________.

A．whether there exists life out of our planet

B．the possibility of his being able to find love

C．how to get rid of singledom

D．what math can do to serve our daily life

2．What does Mr Backus think of the result of his research?

A．Optimistic.  

B．Depressing.  

C．Unrealistic.  

D．Exciting.

3．What can we learn from the first paragraph?

A．Mr Backus' major research field is "singledom"．

B．Mr Backus found a girlfriend three years ago.

C．Mr Backus' new thesis will surely be well received.

D．Mr Backus has been searching for love for long.

4．By "the good news for singles" in the last sentence,Mr Backus probably mean________.

A．you don't have to blame yourself for remaining single

B．maybe the discovery is not reliable at all

C．the result was based on his own criteria

D．there might be more dream date out of London

5．Which of the following statements is true?

A．This passage could be published in a scientific magazine.

B．The passage intends to prove there are other civilizations.

C．The writer doesn't really understand the Drake equation.

D．Most women in London are not suitable for university teachers.

左侧特发性面神经麻痹的患者可以出现的症状、体征（）。

A.左侧面部感觉减退或消失

B.张口时下颌偏向左侧

C.伸舌左偏，左侧舌肌萎缩

D.左眼睑下垂

E.左眼闭合不全