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Plants are a lot smarter than we thought. According to researchers, they are capable of making intelligent decisions regarding risk. Scientists have discovered that one plant, the humble pea, can make decisions regarding how to survive best, even though it does not have a brain. Researchers from the UK's Oxford University and Israel's Tel-Hai College grew several pea plants that had their roots separated between two pots. Each pot contained differing amounts of nutrients. One pot always had the same amount, while the other pot varied between a lot and a little. The plants turned out to be remarkably consistent at diverting their roots to the pot with the most nutrients.

The research paper will be published this week in the Current Biology journal. Researcher Alex Kacelnik said the experiment raises a question, not about plants, but about animals and humans. He wondered whether the pea plant might be more efficient in using its limited decision-making resources than humans. He said, "We have a very fancy brain, but maybe most of the time we're not using it." Professor Kacelnik said he did not think that pea plants were intelligent in the human sense, but that they exhibited complex behaviours to efficiently take advantage of natural opportunities. It would be interesting to see how our lives would be different if we adopted similar strategies.

1.Plants can make the right decision when they are _____.

A difficult

B risky

C safe

D scary

解析：选B。细节理解题。根据第一段第二句...they are capable of making intelligent decisions regarding risk.可知，故选B。

2.The plants turned out to be remarkably consistent at diverting their roots to the pot with ______.

A the most nutrients

B no nutrients

C less nutrients

D more nutrients

解析：选A。细节理解题。根据第一段最后一句The plants turned out to be remarkably consistent at diverting their roots to the pot with the most nutrients.可知，故选A。

3.Where will the the research paper be punished?

A In the Sports journal.

B In the Current Biology journal.

C In the Science journal.

D In the Health magazine.

解析：选B。细节理解。根据第一段第一句The research paper will be published this week in the Current Biology' journal.故选B。

4.What’s the Chinese meaning of the underlined word “capable”?

A 限制的.

B 有能力的.

C 有抱负的.

D 有缺陷的.

解析：选B。词义猜测题。根据语境判定应该是“有能力的”。故选B。

5.Plants are a lot _______ than we thought.

A stupider

B smarter

C happier

D unhappier

解析：选B。主旨大意题。根据第一段第一句Plants are a lot smarter than we thought.可知，这是文章的主题句，故选B。