的影响", 与A项意思相近。故答案选A。

2. Why does the author use many figures in the text?

A. To introduce a topic.

B. To prove an opinion.

C. To prevent an argument.

D. To describe the facts.

【解析】选B。推理判断题。文章第一段引出未来职位会被机器所取代的话题, 接下来通过分析数据指出人工智能对男性工作的影响更大, 最后在第三、四段列举大量数据来印证这一观点。因此答案选B。

3. What can we know from the text?

A. Male workers like tough jobs.

B. Women are better at office jobs.

C. Artificial intelligence may become a trend.

D. Gender prejudice in jobs is a threat to society.

【解析】选C。推理判断题。文章通过一项研究阐述了人工智能对人类劳动的影响, 在未来几十年, 超过47%的现有职位可能会被机器取代, 这说明人工智能在未来会成为一种趋势。由此可推断答案为C。

4. Which of the following can be the best title for the text?

A. Does Gender Prejudice Against Women Exist

B. Artificial Intelligence Is a Human Dream

C. Science and Technology Create New Life

D. The Age of the Robot Worker Will Be Worse for Men

【解析】选D。主旨大意题。通读全文可知, 第一段引出话题"机器取代人类", 下文阐述这一趋势带来的影响, 然后证明这一观点, 并解释男性未来就业情况会更糟糕的原因。因此D项作标题最为恰当。

　We all know donating blood provides a vital lifeline to those in need, but a growing body of research suggests that it could have health benefits for the donor too.

Findings have shown that donating blood reduces the risk of heart attacks and even cancer. It even burns quite a bit of energy - 650 calories for every pint (568 ml) given. The news could come as a promotion (宣传) of British blood banks which use an average of 7, 000 units of blood every day.

It is thought that the benefits arise from lowering high iron levels. Iron affects how thick and sticky the blood is. High iron levels cause the blood to be thicker. Raised iron levels also keep blood from flowing smoothly. Because donating blood removes some of its iron, it may therefore have a protective benefit if done on a consistent basis by helping thin the blood.

According to a study from the Journal of the American Medical Association, researchers found that those aged 43 to 61 had fewer heart attacks when they donated blood every six months. A study of 2, 682 men from Finland found they had an 88 percent reduced risk of heart attacks than those who didn't donate, reported by Medical Daily. Likewise, a study published in the Journal of the National Cancer Institute also links iron to an increased cancer risk. The four-and-a-half-year study involving 1, 200 people found those who made blood donations twice a year had a