Geologists believe that oil and coal are composed of organic molecules______(因为它

游客2023-09-07 30

问题 Geologists believe that oil and coal are composed of organic molecules______(因为它们本身来自于生物).

选项

答案 because they themselves are derived from living things

解析此处需要译出原因状语从句，根据主句的时态，从句要用一般现在时。“来自于”可用词组derive from表达。

转载请注明原文地址:https://tihaiku.com/zcyy/2993483.html

相关试题推荐

随机试题

最新回复(0)

Hebelievesthatprices______(从长远来看肯定要上涨).areboundtoriseinthelongrun本题