关于女性内生殖器的解剖结构,以下哪项正确A.圆韧带起于子宫两侧外角,止于腹股沟B.阔

题型:单项选择题

问题:

关于女性内生殖器的解剖结构,以下哪项正确

A.圆韧带起于子宫两侧外角,止于腹股沟
B.阔韧带在子宫两侧富于肌纤维,与子宫体肌纤维相连
C.卵巢固有韧带在子宫角后方,使子宫倾向后方
D.主韧带横行于宫颈两侧和骨盆侧壁之间,又称宫颈横韧带
E.宫骶韧带起白宫颈后面,附着于第 4、5骶椎前的筋膜

考点:临床执业医师临床执业医师
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现要验证“当合外力一定时,物体运动的加速度与其质量成反比”这一物理规律。给定的器材如下:一倾角可以调节的长斜面(如图)、小车、计时器一个、米尺、天平、砝码、钩码若干。实验步骤如下(不考虑摩擦力的影响),在空格中填入适当的公式或文字。

(1)用天平测出小车的质量m

(2)让小车自斜面上方一固定点A1从静止下滑到斜面底端A2,记下所用的时间t

(3)用米尺测量A1A2之间的距离s。则小车的加速度a=            

(4)用米尺测量A1相对于A2的高度h。则小车所受的合外力F               

(5)在小车中加钩码,用天平测出此时小车与钩码的总质量m,同时改变h,使mh的乘积不变。测出小车从A1静止开始下滑到斜面底端A2所需的时间t。请说出总质量与高度的乘积不变的原因______________________________。

(6)多次测量mt,以m为横坐标,t2为纵坐标,根据实验数据作图。如能得到一条____________线,则可验证“当合外力一定时,物体运动的加速度与其质量成反比”这一规律。

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在美国的许多城市,人们希望能呼吸到最清洁的空气,这种追求几乎达到了宗教般的狂热。为此,一些减少空气污染的新技术应运而生,可是谁也不曾想到,人们却为此不断付出巨大的代价。
1990年,美国的《洁净空气法规》强制空气质量差的地区在汽油中添加充氧剂等化学制品,从而减少一氧化碳和苯等有害气体的排放量。但是,现在发现,大多数常用的充氧剂如甲基叔丁基乙醚已从地下贮油箱中渗入地下水,并已污染了地下饮水源,使这一地区可能在几年内成为美国最严重的地下水污染区。科学家认为,水中即使有十亿分之几十的甲基叔丁基乙醚,也会对人的健康有严重影响,甚至可能会致癌。一些曾坚决反对运用这项技术的团体还认为,加油站的空气中这种充氧气体含量过高,会使人呼吸困难、头痛或眩晕,不仅加油站的人,就连路上的行人也会受到影响。
麻烦的事远不止这些。科学家们证实,这种化学物质具有很强的水溶性,对土壤几乎没有亲和力,同时它又是很难分解的寿命很长的物质。虽说甲基叔丁基乙醚见光可分解,但阳光很难进入土壤和地下水中,人们就很难将它“请”出来,而它渗入到更深水层的可能性则是不可避免的了。美国政府有关部门也采取了一些措施,如关闭受污染的水井,断绝受污染的水源,设法从受污染区外部调水,当然,解决这些问题所需要的资金数量是巨大的。还有一个办法是通过改进贮油箱来减少含有有害物质的汽油的泄漏,但这仍不能解决已经发生的水源污染问题。
目前,美国的科学家们正在制定一个从水源中清除这种有害物质的计划,他们试图把从土壤中分离出来的被称做PMI的细菌注入受污染的地下水中,据说,PMI可以在较短的时间内吸收大剂量的甲基叔丁基乙醚。科学家们同时坦率地说,这项在受污染的土壤和水的试样已经获得成功的试验,却在清洁地下水的具体应用中,还没有让人信服的实例。看来,这种“按下葫芦起来瓢”的情况,在环境保护问题上是值得注意的。

政府有关部门为解决水源污染问题尚未采取的措施有______。

A.关闭受污染的水井
B.改造贮油箱来减少含有有害物质的汽油的泄漏
C.把受污染的水调入外部
D.断绝受污染的水源

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中国经济发展进入到“新常态”,中高速、优结构、新动力、多挑战已成为“新常态”的主要特征。2015年1月20日,国家统计局发布了2014年国民经济的主要统计数据。下列数据符合当前中国经济发展新常态特征的有()

①第三产业增加值增长8.1%,明显快于一、二产业

②全国居民消费价格指数(CPI)同比上涨2.0%

③全国粮食总产量达到60710万吨,增长0.9%

④需求结构中最终消费支出对GDP增长贡献率达51.2%

A、①②

B、②③

C、①④

D、③④

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越婢汤的药物组成是()

A.麻黄、白术、石膏、生姜、甘草

B.麻黄、石膏、生姜、大枣、甘草

C.麻黄、杏仁、石膏、苡米

D.麻黄、茯苓、石膏、大枣、甘草

E.白术、桂枝、防己、茯苓

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It’s never too early or too late for a parent to become a teacher. In this age of teacher accountability, endless school testing, increased pressure and competition, and the proliferation of "educational" toys, too many people forget that success begins at home.

Freeman A. Hrabowski Ⅲ, president of the University of Maryland, Baltimore County, and co-author of Beating the Odds: Raising Academically Successful African American Males and Overcoming the Odds: Raising Academically Successful African American Young Women, says that in the interviews he and his co-authors conducted, the overwhelming factor in their children’s academic achievement was that parents inspired and envisioned their children’s success. They thought and talked about what would be required to have a .successful child.

"It just makes such a difference when there’s someone in that house working to relate to that child and inspire that child," Hrabowski says. "These parents (of the high achievers discussed) are really inspirational in their commitment to their children."

Professor Barbara T. Bowman, one of the faculty founders of Chicago’s Erikson Institute, an independent institution of higher education that prepares child development professionals for leader- ship, says that Black children must learn in two different cultures-the African-American culture in which they live and the mainstream culture on which school and education are based.

Bowman also says the relationship between children and their parents is critical. "It is the early responsive ness of the caregiver to the infant’s behavior that creates a sense of well-being and optimism that affects the child’s interest in learning," says Bowman, who served as president of the institute from 1994 to last year. "Children who like and want to please the adult learn better what the adult wants them to learn."

In this day of highly competitive testing and the stress of getting high SAT or ACT scores, it’s important also to avoid pressuring or overexposing your child. Your son or daughter is probably already facing stress at school and on the playground. Your role is to help him or her relieve and manage that stress. Help them to understand that life does not end or begin with a test. And while academic success is important, it’s also important to keep everything in perspective. Failure is a relative term in the grand scheme of things. If your child did poorly on a test, but answered a particularly tough question correctly, stress the positive. On the other hand, if schoolwork comes too easily to your child, find other ways to challenge him or her so they understand that life won’t always be that way.

Whether a child is interested in learning depends on ()

A. the content the adult wants the children to learn

B. how pleased the parents are when the children are learning

C. the feedback the parents give to children at an early age

D. the physical health of the children

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