2016年高考英语复习专题练习及答案:动词的时态语态

答案：

【语篇解读】　本文是说明文。文章主要介绍了人体头颅移植手术的可能性。

1. B　解析：细节理解题。由第一段中的Up until now there has been no way to successfully reconnect the spinal cord及第三段第二句可知，到目前为止，人体头颅移植的关键在于脊髓的再结合，故选B项。

2. C　解析：词义猜测题。由前面的Connecting a head to a body is impossible for human beings today可知，Anthony Warrens教授认为这种想法太荒谬了，故选C项。

3. A　解析：推理判断题。由第三段中的In 1970 Robert White successfully transplanted the head of a rhesus monkey onto the body of a second rhesus可知，恒河猴头颅移植手术的成功使得脊髓再结合成为可能，故选A项。

4. A　解析：段落大意题。文章倒数第二段主要介绍了手术所需的时间、费用、进行手术的条件及其好处等，故选A项。

B

(2014·河南高三适应性考试)

Brown cows may not actually make chocolate milk, but pink silkworms(蚕) do produce pink silk, a team of scientists has discovered. To see if they could produce predyed silk—silk that comes colored, straight from the source—the team fed ordinary silkworms mulberry(桑树) leaves that had been sprayed(喷洒) with fabric(织物) dyes(染色剂). Out of seven tested dyes, only one worked, producing a thread that reminded me of pink­dyed hair.

And yes, the worms themselves take on some color before they produce silk. Their colorful diets did not affect their growth, the team, which included engineers and biologists from the CSIR­National Chemical Laboratory in India, reports in the journal ACS Sustainable Chemistry & Engineering. (The researchers didn't look too deeply into how the dyes affected the silkworms' health. After all, silkworms die when people harvest their silk.)

The team made dyeing silk this way because coloring fabric normally uses large amounts of fresh water. The water gets polluted with dangerous chemicals in the process, requiring costly treatment before factories can send it back into waterways. Dyeing silk directly by feeding silkworms would avoid those water­washing steps. Scientists are just starting to study this idea. However, it remains to be seen if it's commercially successful. In this experiment, the Indian team tested seven dyes, which are cheap and popular in the industry.

The scientists found different dyes moved through silkworms' bodies differently. Some never made it into the worms' silk at all. Others colored the worms and their silk, but the color disappears before the silk is turned into fabric. Only one dye, named “direct acid fast red”， showed up in the final, washed silk threads. By the time it made it there, it was a pleasant, light pink.