Question

    A new study suggests that the timing of a wound affects the speed at which it heals (治愈). Wounds suffered during the day heal around 60 percent faster than those at night.

The study showed how the bodies’ circadian rhythm (昼夜节奏) controlled the healing of wounds. 1. It tells our bodies when to wake up, eat and sleep in a circle — a series of activities that repeat themselves day after day. 2.

In the study, researchers found that skin cells moved faster to repair wounds suffered during the day. Their findings were published in the journal Science Translational Medicine.

The researchers examined cells, mice, and burn injury databases. 3.

Night-time burns — burns suffered between 8 o’clock at night and 8 o’clock the next morning — were 95 percent healed after an average of 28 days.

But after on average of 17 days, daytime burns — burns suffered between 8 o’clock in the morning and 8 at night — were 95 percent healed. 4.

Wounds are very costly to treat. 5. In Britain’s National Health Services, for example, such services cost around $6.56 billion per year. Experts say the high cost result, in part, from a lack of drugs that speed up the closure of wounds.

A.Each cycle lasts about 24 hours.

B.The circadian rhythm is like a clock or timer.

C.Specifically, their investigation found the following information.

D.The new study’s findings could help scientists develop better drugs.

E.In other words, night-time injuries took an average of 11 days longer to heal.

F.Worldwide, billions of dollars are spent every year on wound-treatment services.

G.That’s what a group of researchers from a university in Canada recently published.

Answer

1.B

2.A

3.C

4.E

5.F

【解析】

本文是一篇说明文。文章主要讲了新的研究表明受伤的时间影响伤口愈合的速度。

1.根据上文The study showed how the body’s circadian rhythm (昼夜节律) controlled the healing of wounds.(研究显示了人体的昼夜节律是如何控制伤口愈合的)可知，B. The circadian rhythm is like a clock or timer.(昼夜节律就像一个闹钟或是定时器)可以承接上文，circadian rhythm是对应词组。故选B。

2.根据上文It tells our bodies when to wake up, eat and sleep in a circle — a series of activities that repeat themselves day after day.(它告诉我们的身体何时醒来，何时进食，何时睡眠——一系列日复一日重复的活动)可知，A. Each cycle lasts about 24 hours.(每个循环持续24小时)可以承接上文。故选A。

3.根据上文The researchers examined cells, mice, and burn injury databases.(研究人员检查了细胞、小鼠和烧伤损伤数据库)可知，接下来会讲有哪些发现。由此可知，C. Specifically, their investigation found the following information.(具体来说，他们的调查发现了以下信息)符合语境。故选C。

4.根据上文Night-time burns — burns suffered between 8 o’clock at night and 8 o’clock the next morning — were 95 percent healed after an average of 28 days. But after on average of 17 days, daytime burns — burns suffered between 8 o’clock in the morning and 8 at night — were 95 percent healed.(夜间烧伤——烧伤发生在晚上8点到第二天早上8点之间——在平均28天后治愈了95%。但是在平均17天之后，白天的烧伤——早上8点到晚上8点之间的烧伤——愈合了95%)可知，E. In other words, night-time injuries took an average of 11 days longer to heal.(换句话说，夜晚时间的受伤愈合时间平均起来，要长于11天)符合语境。故选E。

5.根据上文Wounds are very costly to treat.(治疗伤口是非常昂贵的)及下文In Britain’s National Health Services, for example, such services cost around $6.56 billion per year.(例如，在英国的国民健康服务中，此类服务每年花费约65.6亿美元)可知，这里提到了受伤治疗的花费问题。F. Worldwide, billions of dollars are spent every year on wound-treatment services.(世界范围内，每年用于受伤治疗服务的花费数以亿计)符合语境。故选F。