2016年河南省许昌新乡平顶山三市高三英语第三次模拟考试(2)

meals or of severe blame after some particularly risky adventure．

These days, in the UK at least, the nature of childhood has changed dramatically．Firstly, families are smaller, and there are far more only children．It is common for both parents to work outside the home and there is the feeling that there just isn't time to bring up a large family, or that no one could possibly afford to have more than one child．As a result, today's boys and girls spend much of their time alone．Another major change is that youngsters today tend to spend a huge amount of their free time at home, inside．More than anything this is due to the fact that parents worry far more than they used to about real or imagined dangers, so they wouldn't dream of letting their children play outside by themselves．

Finally, the kind of toys children have and the way they play is totally different．Computer and video games have replaced the board games and more interesting activities of my childhood．The irony（令人啼笑皆非的事情） is that so many ways of playing games are called \The fact that you can play electronic games on your own further increases the sense of loneliness felt by many young people today．

Do these changes mean that children today have a less relaxing childhood than I had? I personally believe that they do, but perhaps every generation feels exactly the same．

28 What is the purpose of the direct question given in the first paragraph? A．To show who the passage is written for B．To get people's attention and lead in the topic

C .Tocollect different people's opinions on the topic.

D．To emphasize the importance of the topic discussed in the passage. 29 Which is NOT a reason for the changes? A．Parents worried too much about their children B．Toys can be played by children in different ways. C．It's more and more dangerous to play outside D．Only children become more, causing families smaller 30 What has the writer INDICATE in the fourth paragraph? A．Board games shouldn’t be replaced. B．Computer and video games should be cut off C．Young people today should play more with others

D．electronicgamestodayeasilycausemoreloneliness to the youth. 31 :The writer's purpose is to __ the childhood changes． A．introduce B．praise C．criticize D．discuss D

Blue-eyed people have been living in Europe for at least 7,000 years, scientists have discovered.

A man who lived on the Iberian Peninsula before Europeans became farmers probably hadblue eyes but dark hair and skin, according to scientists who have sequenced (按序排列 ) hisDNA. This surprising combination of eye, hair and skin coloring may not have been unusualduring his lifetime, but it is no longer seen among modern Europeans, reported by the journalNature.

The man, a Neolithic hunter-gatherer known to scientists as La Brana I, is of greatinterest to scientists because he offers a snapshot of what was in Europeans' DNAbefore agriculture spread through the continent. Experts have theorized that certain geneticfeature spread quickly among humans after they adopted the farming lifestyle. La Brana Ishows that at least some of their predictions were correct.

The man's skeleton, along with that of a male companion, was discovered in 2006 in a

cave in what is now northeastern Spain. The site, known as La Brana-Arintero, sits about 5,

000 feet above sea level, and the cave provided a cold, refrigerator-like environment that preserved his DNA.

In the lab, scientists were able to remove enough DNA from a single tooth to reconstructLa Brana I's entire genome (基因组). They compared it to the DNA of other ancientEuropeans (including Otzi, the 5, 300-year-old mummy found in an Alpine glacier) anddetermined that he was a closer match with hunter-gatherers than with farmers. When it came to genes that would influence La Brana I's appearance, the researchers

found that their 7,OOO-year-old subject had versions of two skin pigment(色素) genes that areeither very rare or nonexistent among Europeans today. Then they looked at other places inthe genome that influence pigmentation(色素沉着) and found a mix of ancient and modern

gene variants(变种). Taken together, La Brana I's DNA “is likely to have resulted in

darkskin pigmentation and dark or brown hair,\

However, his DNA indicates that his eyes were most likely blue, the scientists found. This suggests that gene variants for light-colored eyes and skin did not spread together, they …… 此处隐藏：2393字，全部文档内容请下载后查看。喜欢就下载吧 ……