2017届高考英语二轮复习训练：《动词的时态、语态》1_高考复习指南

2017届高考英语二轮复习训练：《动词的时态、语态》1

　　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。

　　(2017·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.