下雪天,由于路面有冰雪,汽车行驶时轮胎与地面间的摩擦力会变__________,

题型:填空题

问题:

下雪天,由于路面有冰雪,汽车行驶时轮胎与地面间的摩擦力会变__________,汽车刹车后滑行的距离比没有冰雪时___________,因此容易发生交通事故。请你说出一种在冰雪道路上增大摩擦的方法__________________________。

考点:影响摩擦力大小的因素
题型:填空题

Different colours can affect us in many different ways; that’s according to Verity Allen. In a new programme “Colour me Healthy”, Verity looks at the ways that colours can influence how hard we work and the choices we make. They can even change our emotions and even influence how healthy we are. 

“Have you ever noticed how people always use the same colours for the same things?” says Verity. “Our toothpaste is always white or blue or maybe red. It’s never green. Why not? For some reason we think that blue and white is clean, while we think of green products(产品)as being a bit unpleasant. It’s the same for businesses. We respect a company which writes its name in blue or black, but we don’t respect one that uses pink or orange. People who design(设计)new products can use these ideas to influence what we buy.”

During the programme, Verity studies eight different colours, two colours in each part. She meets people who work in the colour industry, from people who design food packages, to people who name the colours of lipsticks. Some of the people she meets clearly have very little scientific knowledge to prove their ideas, such as the American “Colour Doctor” who believes that serious diseases can be treated successfully by the use of coloured lights. However, she also interviews real scientists who are studying the effects of green and red lights on mice, with some surprising results. 

Overall, it’s an interesting show, and anyone who watches it will probably find out something new. But because Verity goes out of her way to be polite to everyone she meets on the programme, it’s up to you to make your own decisions about how much you should believe.

小题1:What’s Verity’s opinion about colours?

A.Colours help people choose products.

B.Different people prefer different colours.

C.Colours have influences on people in many ways.

D.People working in colour industry know little about colours.小题2:What can you infer from Paragraph 2?

A.Colours influence people’s feelings and opinions.

B.People get ideas for new products from colours.

C.New products are popular because of colours.

D.Most companies prefer bright colours.小题3:The underlined part “goes out of her way” probably means ______.

A.feels very pleased

B.makes a special effort

C.goes on in her own way

D.carries on very slowly小题4: What’s the passage mainly about?

A.How people use colours.

B.How colours influence people.

C.What happens in a programme.

D.What makes a programme believable.

题型:填空题

能被芥子酶水解的是()

A.酯苷

B.氧苷

C.氰苷

D.硫苷

E.碳苷

题型:填空题

避雷器是一种限制过电压的保护装置,通常由火花间隙和()组成。

题型:填空题

会计凭证方面,科目汇总表账务处理程序比记账凭证账务处理程序增设了( )。

A.原始凭证汇总表
B.汇总原始凭证
C.科目汇总表
D.汇总记账凭证

题型:填空题

女性。4岁,自觉因擦背着凉后两肩和后背阵阵酸痛,每阵10分钟左右,不发热,仍可下床走动。于今晨1时许,突然出现心前区剧痛,并向双肩、后背和左臂放射,伴大汗,休息后不见缓解,早8点急诊住院。检查:年迈,半卧位,无明显青紫,颈静脉不怒张,肺 (-),心略向左侧扩大,心律尚齐,未闻心脏杂音及摩擦音。心电图:病理性Q波,ST段抬高,T波倒置。诊断:急性心肌梗死。为防止室性心律失常的发生,病人应立即给予的药物是

A.奎尼丁
B.利多卡因
C.普萘洛尔
D.胺碘酮
E.苯妥英钠

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