对于一些不可能实际去做或直接观察困难的工作，如飞行员、建筑师的工作，我们常采取（）来

某公司(所得税税率33%)2005年经营亏损28万元。年终从联营企业(所得税税率 15%)分回税后利润64.6万元。该公司2005年应缴纳的企业所得税额为()。

A．4.44万元

B．6.59万元

C．8.64万元

D．11.4万元

A healthy dose of sunshine may be the secret to staying young, British scientists have disclosed.

Vitamin D is produced naturally by the skin in response to sunlight and may help to slow the ageing process and protect against heart disease, according to the study.

Researchers from King's College London studied 2,160 women aged between 18 and 79, looking at their telomeres - a biological marker of ageing found in DNA．As people get older, their telomeres get shorter and they are easy to have illnesses.

But the study found women with high levels of vitamin D had comparatively longer telomeres - a sign of being biologically younger and healthier.

The study suggests vitamin D may help to slow down the ageing process of DNA, and therefore the ageing process as a whole.

Lead researcher Dr Brent Richards said: "These results are exciting because they prove for the first time that people who have higher levels of vitamin D may age more slowly than people with lower levels of vitamin D．

"This could help to explain how vitamin D has a protective effect on many ageing related diseases, such as heart disease and cancer."

He said further studies are required to confirm the findings.

Professor Tim Spector, head of KCL's twin research unit, and a co-author of the report, added: "Although it might sound absurd(荒谬的), it's possible that the same sunshine which may increase our risk of skin cancer may also have a healthy effect on the general ageing process."

Vitamin D made by the action of sunlight on the skin accounts for 90 per cent of the body's supply, but lower levels can also be obtained through food such as fish, eggs and breakfast cereals.

Other studies have suggested the vitamin plays a key role in protecting against cancer and heart disease.

64．What’s the best title of this passage?

A．Sunshine 'helps to keep you young'

B．Vitamin D has a protective effect on many diseases

C．Telomeres - a biological marker of ageing

D．People have found the secret to having a long life

65．How can people get vitamin D?

A．through water           B．through sunshine     

C．through food               D．both B and C

66．What does the underlined word in paragraph three refer to?

A．It refers to a kind of vitamin that can keep you young.

B．It refers to a biological marker of ageing found in DNA.

C．It refers to a kind of element that can be obtained from sunshine.

D．It refers to a part of the body.

67．Which of the following is not true according to the passage?

A．women with high levels of vitamin D shows a sign of being biologically younger and healthier.

B．vitamin D has a protective effect on many ageing related diseases.

C．too much sunshine may increase our risk of skin cancer.

D．It has been proved that sunshine 'helps to keep you young'.

预试定检管理要求，在预试定检报告出具后，若各项试验项目均合格，试验报告经由上级配电运行管理单位（部门）签审，预试定检报告由设备运行单位统一归档管理。（）

保险机构不得利用政府及其所属部门、垄断企业或者组织，排挤、阻碍其他保险机构开展保险业务。这一规定主要体现的是什么原则？（）

A、政企分开

B、公平

C、公开

D、安全

就我国情况而言，( )会促使部分资金由银行储蓄转为股票投资，从而对证券市场的走势产生积极影响。

A．提高利率

B．征收利息税

C．加征股票收益税

D．加征股票交易印花税