Srar shine because of ______produce by nuclear reactions taking place within them.

来源：百度知道 编辑：UC知道 时间：2024/05/16 00:34:33
a. the amount of light and heat is
b. which the amount of light and heat
c. the amount of light and heat that it is
d. the amount of light and heat

为什么？

选D，

这不是什么紧缩现象，只是定语从句中省略（which is）而已。
实际上，这里有两处省略(which be)

the amount of light and heat （which is） produced by nuclear reactions (which are) taking place within them

注意produce应该是produced， 过去分词形式， 你看看是不是打错了。

A
because of + noun.
is produced by....

D
....because of the amount of light and heat ( which is ) produced by.......

which is 省略，从句的紧缩现象