搜题请搜索小程序“爱下问搜题”
问题 选择题

下列各句中，划线的成语使用不恰当的一项是

A．《红楼梦》中的人物，总计四百有余，对主要人物的刻画，各具情态，各有性格，无不栩栩如生。

B．《锦瑟》一诗，堪称李商隐诗集中的压卷之作，然而，对于这首诗的旨意，千百年来聚讼纷纭，不置可否。

C．他驰骋想象，运用神话的离奇境界，把自己热烈的情感注入到所描写的对象之中，以惊世骇俗的笔墨，恣意挥洒，借以抒发个人怀抱的抑郁与不平。

D．这种富于启发性的概念导致这方面的科学研究纷至沓来：世界各国主要研究所的理论物理学家们写出了好几千篇探索超维空间性质的学术论文。

答案

B

不置可否: 置：放，立；可：行；否：不行。不说行，也不说不行。指不表明态度。

阅读理解

Can trees talk? Yes, but not in words. Scientists have reason to believe that trees do communicate (交际) with each other. Not long ago, researchers learned some surprising things. First a willow tree attacked in the woods by caterpillars (毛虫) changed the chemistry of its leaves and made them taste so terrible that they got tired of the leaves and stopped eating them. Then even more astonishing, the tree sent out a special smell---a signal (信号) causing its neighbors to change the chemistry of their own leaves and make them less tasty.

Communication, of course, doesn’t need to be in words. We can talk to each other by smiling, raising our shoulders and moving our hands. We know that birds and animals use a whole vocabulary of songs, sounds, and movements. Bees dance their signals, flying in certain patterns that tell other bees where to find nectar (花蜜) for honey. So why shouldn’t trees have ways of sending message?

小题1: It can be concluded from the passage that caterpillars do not feed on leaves that ______.

A．are lying on the ground

B．have an unpleasant taste

C．bees don’t like

D．have an unfamiliar shape小题2:According to the passage, the willow tree was able to communicate with other trees by ______.

　    

A．waving its branches

B．giving off a special smell

C．dropping its leaves

D．changing the colour of its trunk小题3:According to this passage, bees communicate by ______.

A．making special movement

B．touching one another

C．smelling one another

D．making unusual sound
查看答案
单项选择题

葡萄糖属于还原性糖的是（）

A.还原性糖

B.双糖

C.脂肪

D.纤维素
查看答案