Text 2 It is a wise father that knows his own child, but today a man can boost his pater

第1题

It is a wise father that knows his own child, but today a man can boost his paternal （fath

It is a wise father that knows his own child, but today a man can boost his paternal (fatherly) wisdom— or at least confirm that he's the kid's dad. All he needs to do is shell out $30 for paternity testing kit (PTK) at his local drugstore—and another $120 to get the results.

More than 60,000 people have purchased the PTKs since they first became available without prescriptions last year, according to Doug Fogg, chief operating officer of Identigene, which makes the over-the-counter kits. More than two dozen companies sell DNA tests directly to the public, ranging in price from a few hundred dollars to more than $ 2,500.

Among the most popular: paternity and kinship testing, which adopted children can use to find their biological relatives and families can use to track down kids put up for adoption. DNA testing is also the latest rage among passionate genealogists—and supports businesses that offer to search for a family's geographic roots.

Most tests require collecting cells by swabbing saliva in the mouth and sending it to the company for testing. All tests require a potential candidate with whom to compare DNA.

But some observers are skeptical. "There is a kind of false precision being hawked by people claiming they are doing ancestry testing," says Troy Duster, a New York University sociologist. He notes that each individual has many ancestors—numbering in the hundreds just a few centuries back. Yet most ancestry testing only considers a single lineage, either the Y chromosome inherited through men in a father's line or mitochondrial DNA, which is passed down only from mothers. This DNA can reveal genetic information about only one or two ancestors, even though, for example, just three generations back people also have six other great-grandparents or, four generations back, 14 other great-great-grandparents.

Critics also argue that commercial genetic testing is only as good as the reference collections to which a sample is compared. Databases used by some companies don't rely on data collected systematically but rather lump together information from different research projects. This means that a DNA database may have a lot of data from some regions and not others, so a person's test results may differ depending on the company that processes the results. In addition, the computer programs a company uses to estimate relationships may be patented and not subject to peer review or outside evaluation.

In Paragraphs 1 and 2, the text shows PTK's ______.

A．easy availability

B．flexibility in pricing

C．successful promotion

D．popularity with households

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第2题

Part ADirections :Read the following three texts. Answer the questions on each text by' ch

Part A

Directions :

Read the following three texts. Answer the questions on each text by' choosing A, B, Cor D. Mark your answers on，ANSWER SHEET1.

Text 1

Whenever Catherine Brown, a 37-year-old journalist, and her friends, professionals in their 30s and early 40s, meet at a London cafe, their favorite topic of conversation is relationships: men's reluctance to commit, women's independence, and when to have children-or, increasing-Iy， whether to have them at all. "With the years passing my chances of having a child go down, but I won't marry anyone just to have a child," says Brown. To people like Brown, babies are great-if the timing is right. But they're certainly not essential.

In much of the world, having kids is no longer a given. "Never before has childlessness been an understandable decision for women and men in so many societies," says Frank Hakim at the London School of Economics. Young people are extending their child-free adulthood by postponing children until they are well into their 30s, or even 40s and beyond.

A growing share are ending up with no children at all. Lifetime childlessness in western Germany has hit 30 percent among university-educated women, and is rapidly rising among lower-classmen. In Britain, the number of women remaining childless has doubled in 20 years.

The latest trend of childlessness does not follow historic patterns. For centuries it was not unusual for a quarter of European women to remain childless. But in the past，childlessness was usually the product of poverty or disaster, of missing men in times of war. Today the decision to have-or not have-a child is the result of a complex combination of factors, including relationships, career opportunities, lifestyle. and economics.

In some cases childlessness among women can be seen as a quiet form. of protest. In Japan, support for working mothers hardly exists. Child care is expensive, men don't help out, and some companies strongly discourage mothers from returning to work. "In Japan, it's career or child，"says writer Kaori Haishi . It's not just women who are deciding against children; according to a re-cent study, Japanese men are even less inclined to marry or want a child. Their motivations, though, may have more to do with economic factors.

46. Catherine Brown and her friends feel that having children is not _________

[ A] totally wise

[ B] a huge problem

[ C] a rational choice

[ D ] absolutely necessary

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第3题

Based on Unit 2 Text A: The phrase “to learn which items will increase in value or ar

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第4题

Based on Unit 2 Text B: Description of unknown leaders is not included in the “storie

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第5题

Based on Unit 2 Text A: the phrase “hold great value” （para.5) means “be worth much m

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第6题

Based on Unit 2 Text A: According to the passage, the title “From Trash to Treasure”

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第7题

Based on Unit 2 Text A: collectors check to see if it has any flaws that may reduce i

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第8题

Based on Unit 2 Text B: If you want to get the most enjoyment from your activity of c

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第9题

在${l}_{t}}=0.1/text{m}$的条件下，牵引拖车以a=4[m/s^2]的加速度起步。a)拖车后轮所受到的地面的垂向作用力为（)，单位（N)

A.8335(向上)

B.8235(向上)

C.8135(向上)

D.8435(向上)

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第10题

请选择正确的选项，将文字信息写入到文本文件lianxi.txt中： Font font1; int i; void setup(){

请选择正确的选项，将文字信息写入到文本文件lianxi.txt中： Font font1; int i; void setup（){

size(400,300); background(0); font1=createFont("黑书",40); String[] str1=new String[2]; str1[0]="飞来山上千寻塔,"; str1[1]="闻说鸡鸣见日升。"; //输出到文件“lianxi.txt”中 }

A、saveStrings("lianxi.txt",str1);

B、saveStrings(str1,"lianxi.txt");

C、text(str1,"lianxi.txt");

D、text("lianxi.txt",str1);

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第11题

wise（中文）（）

A.微小的

B.广阔的

C.明智的

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