【題目】Scientists are fond of running the evolutionary clock backward, using DNA analysis and the fossil record to figure out when our ancestors stood straight and split off from the rest of the primate evolutionary tree. But the clock is running forward as well. So where are humans headed? Here's a thoughtless assessment of possible paths, ranging from similar humans to alien-looking hybrids bred for interstellar (星際的) travel.

Different populations of a species have to be separated from each other in order for those populations to diverge into separate species. Populations are increasingly in contact with each other， leading to greater gene-mixing. It's believable that separate species would appear. Evolution is still at work and the trend may well be accelerating. Cultural diversity is fading as human society becomes more interconnected globally.

The radical king of evolution moves much more quickly than biological evolution. High-tech improvements are ranging from Supermen, to camera-equipped flying drones（遙控飛機(jī)）, to pills that keep soldiers going without sleep or food for days. To date, genetic medicine has focused on therapies that work on only one person at a time. The effects of those therapies aren't carried on to future generations. Tinkering with the germline could conceivably produce a superhuman species in a single generation-but could also conceivably create a race of monsters.

Today the rapid pace of cybernetic(計算機(jī)控制論的) change has led to worry that artificial intelligence may outpace human’s natural smarts. In some fields, artificial intelligence has already bested human. We're already making machines that can be assimilated (同化) including artificial limbs, mechanical hearts, and artificial retinas (視網(wǎng)膜).

If humans survive long enough, there's one sure way to grow new branches on our evolutionary family tree by spreading out to other planets. If humans established a permanent settlement on other planets, the radically different living conditions would change the evolutionary equation (方程式) What will be inconceivable millions of years from now? Two intelligent species, human and machine, definitely work together to spread life through the universe.

【1】Scientists study the evolution according to .

A. different populations of a species

B. DNA analysis and the fossil record

C. cultural diversity and greater gene-mixing

D. high-tech enhancements and biological evolution

【2】 Which is NOT true about human beings' evolution?

A. New species will appear.

B. Human's evolution is faster than biological evolution

C. Cultures will become more colorful.

D. The evolution might create a race of monsters.

【3】What might bring threat to human beings?

A. Supermen. B. Monsters.

C. Alien. D. Artificial intelligence.

【4】Which of the following must happen in the future?

A. Humans survive long enough.

B. Humans spread out to other planets.

C. Human and machine work together.

D. Living conditions change the evolutionary equation.

【答案】

【1】B

【2】C

【3】D

【4】C

【解析】

試題分析：本文寫了當(dāng)今科技所面臨的種種問題，從DNA研究，到人工智能等問題。

【1】B細(xì)節(jié)理解題。由文章第一段 Scientists are fond of running the evolutionary clock backward, using DNA analysis and the fossil record to figure out when our ancestors stood straight and split off from the rest of the primate evolutionary tree.可知科學(xué)家們?yōu)榱搜芯緿NA和化石記錄，故選B。

【2】C推理判斷題。文中沒有提到C選項，沒有說文化會發(fā)生什么樣的改變，故選C。

【3】D細(xì)節(jié)理解題。 Today the rapid pace of cybernetic(計算機(jī)控制論的) change has led to worry that artificial intelligence may outpace human’s natural smarts. 可知人工智能是現(xiàn)在人類的主要威脅，故選D。

【4】C細(xì)節(jié)理解題。 Two intelligent species, human and machine, definitely work together to spread life through the universe.可知我們未來可能和機(jī)器一起工作，故選C。

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