9book2-unit-420xx高考英語(yǔ)大一課本知識(shí)精梳檢測(cè)(人教版)(編輯修改稿)
2025-04-05 06:02 本頁(yè)面
【文章內(nèi)容簡(jiǎn)介】 e again. This leads to several other conclusions：trees must notice the temperature and the length of the day and be able to save their experiences somewhere. Obviously，trees don39。t have brains，but it is thought that in the sensitive tips of their roots they keep track of information and experiences.But trees aren39。t only clever when it es to caring for themselves. They also support each other whenever there39。s trouble by giving warnings and even taking care of sick and weak conspecifics with nutrients. For example，one time the author found a very old tree stump. Its insides had rotted a long time ago to topsoil. But the wood on the outside of the stump was still living. How was this possible？Well，the stump was nourished by its neighbors with nutrients from the root system，and had been for at least 400 years!Why do treesdo such a thing？It39。s simple：it39。s better together. Trees need the forest；it protects them from storms，provides the right microclimate and warns them of attacks. 1．Why does the author mention the three oak trees?A．To illustrate trees can learn from experiences.B．To show trees can make independent decisions.C．To explain trees are quite supportive to each other.D．To prove trees have the same personalities as humans.2．According to the text，which of the following best describes general features of trees?A．Anxious and bold. B．Smart and adventurous.C．Helpful and wellbehaved. D．Adaptable and supportive.3．What does the underlined phrase“do such a thing” mean?A．Give warnings. B．Offer assistance.C．Depend on others. D．Provide nutrients.4．Where does this text most probably e from?A．A public lecture. B．A science book.C．An experiment report. D．A travel journal.BPassenger pigeons (旅鴿)once flew over much of the United States in unbelievable numbers. Written accounts from the 18th and 19th centuries described floc
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