问题 单项选择题

患儿,男,1天,生后1分钟Apgar评分5分。查体:易激惹,心率150次/min,肌张力稍增强,Moro反射增强,余(-),最可能的诊断是()

A.低钙惊厥

B.缺氧缺血性脑病

C.中枢神经系统感染

D.胆红素脑病

E.以上都不是

答案

参考答案:B

阅读理解

D

As public playgrounds grow increasingly worn and shabby, the for-profit centers offer clean, safe, supervised activity as well as a variety of challenging exercises to develop youngsters’ physical fitness, usually for a fee of around $5 an hour. “Playgrounds are dirty, not supervised,” says Dick Guggenheimer, owner of the two-month-old Discovery Zone in Yonkers, N.Y., part of a Kansas City-based chain. “We’re indoors; we’re padded(铺上软垫); parents can feel their child is safe.”

Discovery Zone has sold 120 outlets in the past 14 months, boasting sandboxes full of brightly colored plastic balls, mazes(迷宫), obstacle courses, slides and mountains to climb. Now McDonalds is getting into the act. The burger giant is test-marketing a new playground, Leaps&Bounds, in Naperville, Ill. Phys Kids of Wichita has opened one center and has plans to expand.

American parents are rightly worried about their kids leisure life. There are 36 million children in the U.S. aged 2 to 11 who watch an average of 24 hours of TV a week and devote less and less energy to active recreation. Nationwide decrease in education budgets are making the problem worse, as gym classes and after-hours sports time get squeezed. Says Discovery Zone president Jack Gunion: “we have raised a couple of pure couch potatoes.”

In an attempt to attract more people , the new facilities cater to the concerns of two-earner families, staying open in the evenings, long after traditional public playground have grown dark and unusable. At Naperville’s Leaps&Bounds, families can play together for $4.95 per child, parents free. Fresh-faced assistants, dressed in colorful sport pants and shirts, guide youngsters to appropriate play areas for differing age group.

These new playground are not meant to be day-care facilities; parents are expected to stay and play with their kids rather than drop them off. But several also provide high-tech baby-sitting services. At some of the Discovery Zones, parents can register their children in special supervised programs, then leave them and slip away for a couple of hours to enjoy a movie or dinner.

The most fun of all, though, is getting to do what parents used to do in the days before two-career families and two-hour commutes: play with their kid. That, at least, is old-fashioned, even at per-hour rates.

68. What is this article mainly talking about?

A. Children can play in the public playground without parents’ care.

B. The fast development of Discovery Zone.

C. A new type of playground for kids.

D. The decay of outdoor playground.

69. According to the article, which of the following is true to the new playground?

A. The cost is high for a family.

B. It’s a place where kids can watch TV while eating potatoes.

C. It doesn’t allow parents to leave their kids.

D. It’s a place where parents can play together with their kids.

70. What does the writer mean by saying “old-fashioned”?

A. The so-called new playground is outdated.

B. the new playground offers a fashion which is popular in the past.

C. The new playground is also enjoyed by old people.

D. The new playground is actually enjoyed by parents

71. What is the writer’s attitude toward the new playground?

A. Agreeable.         B. Indifferent.        C. Objective.         D. Neutral.

单项选择题

打开电视,广告中的流行天王、天后们都在大嚼薯片。你的生活不知不觉被炸薯片(薯条)所入侵:上网要有炸薯片,赖在沙发上看碟少不了炸薯片,去快餐店当然要点炸薯条,和朋友聚会也顺手拎上一包……
然而没有一种欲望的满足是不用付出代价的。电视上,台湾一位营养学家曾用打火机点燃一片薯片,一团黑烟冒出,一片小小的薯片足足燃烧了一分多钟,一串又一串油脂流了出来。这位营养学家说:当土豆变成薯片时,热量增加了250倍!
日本电视早就在新闻中播出过一条消息:薯片中含有丙烯酰胺成分,具有很强的致癌性!
日本厚生劳动省从薯片中检验出高浓度的被认为具有致癌性的丙烯酰胺。此前瑞典政府研究发现:含有大量碳水化合物的谷物类,如果进行烧烤油炸等烹调处理,会生成具有致癌作用的丙烯酰胺。
以油炸土豆食品为日常零嘴的英国、法国、美国等国家纷纷进行了试验和检测,全都得出肯定结论。
在国际癌症研究机构(IARC)对致癌物质危险程度的5级分类中,丙烯酰胺被列为第2级,致癌性相当高。IARC的5级分类中,最危险的是1级,属于确认致癌物质,其次是2A和2B级,具有较高致癌可能性。1级的有煤焦油、石棉、口嚼香烟、镉元素等;2A级的有丙烯酰胺、用作木材防腐剂的杂酚油、汽车排放的废气等。薯片中的丙烯酰胺与汽车排放的废气属于对人体危害程度相等的有毒物质,所以有人说,吃薯片等于在吃汽车的废气!
科学家通过对老鼠的实验发现,以1千克体重摄入2毫克的比例,持续给老鼠喂食丙烯酰胺,结果老鼠相继患上了肺癌或乳腺癌。将这一比例换算到人的身上,相当于体重60千克的人,每天摄入120毫克的丙烯酰胺。而检验中发现丙烯酰胺成分最多的薯片,1千克中约含有3.5毫克。换言之,每天连续吃约34千克的薯片就会达到这一致癌临界点。市面上销售的薯片大多数在每袋100克左右,也就是说每天吃上340袋薯片,十有八九会患癌症。当然,事实上没有人会这样吃。
那么,是不是说吃薯片就毫无危险了呢 尽管研究者们还存在分歧,但是有一种意见占了上风,那就是没有人敢百分之百地肯定长期大量地食用薯片对人体无害。因此,如今的儿童从小就食用薯片,日积月累后,后果很让人担忧。
另外薯片中含铝过量,如长期食用铝含量过高的膨化食品,会引起神经系统病变,表现为记忆减退,视觉与运动协调失灵,严重者可致痴呆。人体摄入过量的铝,还会抑制骨生成,发生骨软化症等。

薯片中的哪种物质接近于汽车排放的废气对人体的危害

A.丙烯酰胺

B.煤焦油

C.碳水化合物

D.过多的油脂