正确答案: C

问荆

题目：下列蕨类植物中，植物体的茎具明显的节与节间之分的是( )。

解析：C

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举一反三的答案和解析：

[单选题]葵花子、南瓜子、松子、玉米粒都是种子。( )

错误

[单选题]天南星科许多植物有块茎，块茎常入药或食用。( )

正确

[单选题]Up to now, the program ________ thousands of children who would otherwise have died.

has saved

解析：本题考查动词时态的用法。句意应为“截止到现在，这个项目已经挽救了成千上万的本来会死去的孩子的生命。”up to now是现在完成时态的标志，所以空格处使用现在完成时态。

[单选题]E Humans are naturally drawn to other life forms and the worlds outside of our own. We take delight in the existence of creatures and even whole socicties beyond our everyday lives.This sense of wonder is universal look at the efforts that scientists have made to find out whether life of some kind exists on Mars, and the popularity of fantasy(幻想) litcrature or movies like The lord of the Rings, This sense of wonder drous us to each other, to the world around us, and to the world of make-believe. But have we gone to far in creating worlds of fantasy that we are missing the phcasure of other worlds that alrewly exist all around us?

the general existence of the sense of curiosity