单选题What can we infer about DNA-methylation from the passage?
A．It can reveal levels of self-control.
B．It relates to the physiological age.
C．It is one of the ingredients of blood.
D．It changes with social circumstance.
根据题干关键词DNA-methylation可定位至文章第六段第五至七句。
推理判断题。定位句指出，研究者通过记录细胞DNA甲基化模式，对比研究对象与特定年龄应有的细胞的情况，从而得出研究对象的生理年龄信息，可见，DNA甲基化与人类的生理年龄有所关联，故答案为B。A“它能揭示自控力水平”，从定位句可知，研究者研究DNA甲基化模式是为了观察细胞年龄，而原文并没提到它可以显示自控力水平，故可排除；C“它是血液中的一种成分”，研究者抽取血液记录细胞DNA甲基化模式，只能说明从分析血液的途径反应甲基化模式，不能说DNA甲基化是血液的成分，故可排除；D“它随着社会环境而变化”，文中提到对于同样发展自控力的人群而言，不同社会背景可能会造成不同的影响，但不能笼统地说甲基化模式会随着社会环境而变化，故可排除。
你可能感兴趣的试题
1What can we know about Dr. Brody's findings?
A．They are out of the expectation of the researchers.
B．They reveal a connection between gene and age.
C．They contradict with the results of Mischel's study.
D．They raise a new issue for research in the future.
3Questions are based on the following passage.
Marketplace or peer-to-peer (P2P) lending matches borrowers and lenders on low-cost online platforms. By skirting banks, P2P lending allows borrower and lender alike to achieve better rates of interest. Essentially, P2P lending is a way of capitalizing on the network effect of social media and the volumes of data generated therein to allow cheaper access to capital.
According to Liberum, P2P lending in the U. K. will grow at 98 percent year-on-year in 2015, with ￡3.5 billion presently lent out. Worldwide in 2015, it's estimated that $77 billion will be lent via P2P platforms-- $60 billion China, $12 billion U.S.A. and $5 billion U. K. Morgan Stanley's Huw Steenis says, "While marketplace lending is still about 1 percent of unsecured consumer and SME lending in the U. S., we think it can reach approximately 10 percent by 2020... We forecast the global market to grow to $150 - $490 billion by 2020." As Liberum's Cormac Leech says, "We are wituessing the biggest changes to the banking sector for 400 years."
P2P lending offers huge opportunities, mainly at the expense of banks, whose biggest margins are traditionally in unsecured lending. Herein is the layer of fat P2P platforms are guzzling (大肆掠食的), picking off the banks' best customers. P2P platforms have also proved superior at harvesting and managing big data, and have lower cost bases than banks.
A significant development is that institutional money is now alighting. The largest quoted institutional P2P lender, P2P Global Investment PLC, floated in London last year. It has raised nearly ￡500m and aims to double that this year. As a reward for lofting "transformational" amounts of cash on to various platforms, P2P Global has been accumulating warrants and options on their equity, notably Ratesetter, Zopa, Direct Money and Lending Works.
In a twist to this development, Neil Woodford, Britain's most famous fund manager, recently upped his stake in P2P Global. Last August Woodford sold out of HSBC, fearing "fine inflation". This seems a ringing endorsement of this disruptive but nascent (初期的) sector.
Perhaps most significantly, in May this year, Zopa, the P2P platform, announced its debut in secured (most P2P lending is unsecureD. lending by collaborating with Uber. Uber drivers in U. K. will be able to borrow via Zopa to buy their cars, with loans secured against the cars themselves.
Of course, the sector presents risks. The credit dry-up when Interest rates rise. A P2P platform may go bust. But some investors, refugees from the banking sector perhaps, will simply like the idea of being on the right side of regulatory and technological upheaval (突变). And when the banks finally understand, how will they react? Who knows? So far, none of them have.
Liberum's data quoted in Paragraph Two indicates that __________.
A．P2P platform offers huge opportunities for banks
B．P2P lending attracts the old customers of banks
C．P2P has seized most share of the financial market
D．P2P lending has been experiencing fast booming
