问题 填空题

“从生活走进化学,从化学走向社会”请你用化 学知识解释以下生活中的问题:

(1)下列服装主要用有机合成材料制成的是___________.(填标号)

A.羊毛衫      B.涤纶连衣裙     C.腈纶运动衣      D.纯棉T恤

(2)①2012年1月5日23时许,魏某于酒后驾驶二轮摩托车在行驶中将在某地 摆放锥桶的吴某撞倒,经群众报警后,民警赶到现场,经检测,魏某的血液酒精含量为260.8mg/100ml,属于 醉酒驾驶机动车。酒精的化学式是____________________

②自热米饭是一种快餐食品。该自热米饭是利用发热包中的生石灰与水反应放出热量来进行加热,生石灰与水反应的化学方程式为___________

③食品安全无小事,不久前发生的“染色馒头”和“毒豆芽’’事件,受到社会广泛关注。“染色馒头”是在馒头中添加了柠檬黄色素,柠檬黄中含有铬酸铅(PbCrO4),它是一种致癌物。已知铬酸铅中铅元素的化合价为+2价,则铬元素的化合价为_____________;

④农村部分家庭引用的井水含大量 可溶性钙镁化合物,给生活带来很多麻烦,生活中可用_____________的方法来降低水的硬度。

(3)①人被蚊虫叮咬后皮肤会红肿痛痒,这是由于蚊虫在被叮咬的皮肤内注人了少量的酸性物质所致.在被咬的皮肤上涂少许下列生活用品中的_________(填序号),痛痒便会消失.  

A.香油        B.食盐水        C.纯碱水       D.糖水

②房屋装修后,可在室 内放 一些活性炭来吸收装修材料释放出的甲醛、苯等有毒气体,这是利用活性炭的___________性。

(4)汽车是现代生活中常见的一种交通工具。CNG双燃料环保汽车已在全国各地投入使用,这种汽车所用的燃料是汽油和压缩天然气。写出天然气完全燃烧的化学方程式:_______________ 。

答案

(1)B、C                    

(2)①C2H5OH(或C2H6O) ;②CaO+H2O==Ca(OH)2     ;③+6     ; ④煮沸 

(3)① C   ;②  吸附                                               

(4)

阅读理解

  Beauty has always been regarded as something praiseworthy. Almost everyone thinks attractive people are happier and healthier, have better marriages and have more respectable jobs. Personal advisors give them better advice for finding jobs. Even judges are softer on attractive defendants. But in the executive circle, beauty can become a liability.

While attractiveness is a positive factor for a man on his way up the executive ladder, it is harmful to a woman.

Handsome male executives were considered as having more honesty than plainer men; effort and ability were thought to lead to their success.

Attractive female executives were considered to have less honesty than unattractive ones; their success was connected not with ability but with factors such as luck.

All unattractive women executives were thought to have more honesty and to be more capable than the attractive female executives. Interestingly, though, the rise of the unattractive overnight successes was connected more to personal relationships and less to ability than that of the attractive overnight successes.

Why are attractive women not thought to be able? An attractive woman is considered to be more feminine and an attractive man more manly than the less attractive ones. Thus, an attractive woman has an advantage in traditionally' female jobs, but an attractive woman in a traditionally manly position appears to lack the "manly" qualities required.

This is true even in politics. "When the only clue is how he or she looks, people treat men and women differently," says Anne Bowman, who recently published a study on the effects of attractiveness on political candidates. She asked 125 undergraduate students to rank two groups of photographs, one of men and one of

women, ir o_nler of attractiveness. The students were told the photographs were of candidates for political offices. They were asked to rank them again, in the order they would vote for them.

The results showed that attractive males completely defeated unattractive men, but the women who had ranked most attractive unchangeably received the fewest votes.

51. The word "liability" most probably means       

A. disadvantage     B. advantage         C. misfortune        D. trouble

52. In traditionally female jobs, attractiveness       

A. makes women look more honest and capable

B. strengthens the feminine qualifies required

C. is of no importance to women

D. often enables women to succeed quickly

53. Bowman's experiment shows that when it comes to polities, attractiveness        

A. turns out to be a disadvantage to men

B. is more of a disadvantage than an advantage to women

C. affects men and women alike

D. has as little effect on men as on women

54. It can be inferred from the passage that people's views on beauty are often      

A. practical     B. supportive      C. old-fashioned    D. one-sided

55. The author writes this passage to

A. give advice to job-seekers who are attractive

B. discuss the disadvantages of being attractive

C. demand equal rights for women

D. state the importance of appearance

单项选择题