问题 解答题
第十六届亚运会将于2010年11月12日至27日在中国广州进行,为了搞好接待工作,组委会招募了16名男志愿者和14名女志愿者,调查发现,男女志愿者中分别有10人和6人喜爱运动,其余不喜爱.
喜爱运动不喜爱运动合计
1016
614
合计30
(1)根据以上数据完成下面列联表:
(2)根据列联表的独立性检验,能否有90%把握认为性别与喜爱运动有关.
P(K2≥k)0.1000.0500.0250.0100.001
k2.7063.8415.0246.63510.828
参考公式:K2=
n(ad-bc)2
(a+b)(c+d)(a+c)(b+d)
答案

(1)根据条件中所给的a,b,c,d,a+b,a+d,c+d,b+d的值,利用实数的加减运算得到列联表:

喜爱运动不喜爱运动合计
10616
6814
合计161430
(2)假设:是否喜爱运动与性别无关,由已知数据可求得:

K2=

30×(10×8-6×6)2
(10+6)(6+8)(10+6)(6+8)
≈1.1575<2.706,

因此,在犯错的概率不超过0.10的前提下不能判断喜爱运动与性别有关,

故不能得到有90%把握认为性别与喜爱运动有关.

单项选择题
阅读理解

While learning the science lessons,I used to get a doubt—why ear,nose,tongue and eyes should be called as special senses?The basic reason is that these are the channels through which we maintain contact with the surroundings.Though apparently it may feel like these are individual sensory organs,they do show some connectivity.Interestingly,our hearing is less sharp after we eat a heavy food.Isn’t it good for a sound nap after a stomach­full meal?That does not mean we go deaf after a meal,but the hearing pitch(强度) does change after a heavy meal.

We usually give credit of the taste to our tongue,but do you know that unless saliva(唾液) dissolves something,our tongue cannot recognize the taste of the food eaten.Taste is nothing but the food chemicals dissolved in the saliva being sensed by the taste buds present on the tongue.Try_to_dry_off_your_tongue_and_mouth_with_a_tissue_paper_and_then_taste_something.

Women are much better smellers than men.They are born with this characteristic ability and can correctly pinpoint the exact fragrance of the sample.We all can store almost 50,000 different scents(气味),which are strongly tied to the memories.

Pupils(瞳孔) do not respond to light alone,but to the slightest bit of noise around too.Thus surgeons,watchmakers and those professionals who have to perform a much delicate job do prefer to have a sound­free environment.Even a small noise can dilate(扩大) their pupils,change the focus and blur(使模糊) their vision.If you do not wear glasses or contact lens due to having a 6/6 vision,you are just among the one third of the human population.It is now statistically proved that only one third of the population has perfect vision,rest all are either wearing glasses or are trying to read with a compromised vision.

Each and every one of us has a particular or individualistic or characteristic smell,which is unique to us,except for the identical twins.This smell is very subtle(微妙的) yet can be sensed even by a newborn.It may be due to this scent that the newborn recognizes the presence of his parents around.Many of us can pinpoint the smell of our significant friends and colleagues.A significant part of this phenomenon is guided by genetics but it is also modified by the environment,diet and personal hygiene.This all together creates the unique chemistry that is individualistic for each person.

小题1:We can learn from Paragraph 1 that ________.

A.after a full meal our hearing is as good as before

B.all sensory organs are connected and can be exchanged

C.sensory organs’ functions can never be changed for their particular character

D.we feel and learn about the world around us through our eyes,ears,nose and tongue小题2:What is the text mainly about?

A.The functions of sensory organs.

B.The connectivity of sensory organs.

C.A newborn’s senses of the sensory organs.

D.The differences of senses between women and men.小题3:What does the author mean by the underlined sentence in Paragraph 2?

A.Our tongues can’t be dried while eating something.

B.If your tongue is dried without any saliva on it,it will not work.

C.A tissue paper is the only thing that can be used to dry our tongues.

D.If your tongue is dried with a tissue paper,it may work as well as before.