Since humans first walked the earth, we have relied on plants for our survival. They provide us with food, shelter, medicine and even the oxygen we breathe. Now, a group of scientists is wondering if they can protect us from climate change as well. Researchers in San Diego launched a new...
aregola automaticamente 自动规则 [translate] aWhen the first humans appeared on earth, dinosaurs have been extinct for several million years!people through the discovery of fossil dinosaur. 当第一个人在地球上出现,恐龙是绝种几百万年! 人们通过在化石恐龙的发现上。 [translate] ...
A. that B. when C. where D. why 相关知识点: 试题来源: 解析 B。“when the first humans appeared on Earth”是对“mystery”的解释说明,“谜团是人类第一次出现在地球上是什么时候”,用“when”引导同位语从句,表示时间。反馈 收藏
结果1 题目 Ever humans first walked the earth, we have relied on plants for our survival. 相关知识点: 试题来源: 解析 1.since 考查时间状语从句。本题句意为“自从人类第一次在地球上迈开脚步,我们就依靠植物生存”。主句所采用的时态是现在完成时,提示应填写 since。 反馈 收藏 ...
(用适当的词填空) 相关知识点: 试题来源: 解析 since 【详解】 考查时间状语从句。句意:自从人类第一次在地球上迈开脚步,我们就依靠植物生存。主句时态是现在完成时,设空处应填写从属连词since,ever since意为“自从”,引导时间状语从句。故填since。反馈 收藏 ...
(四)Humans first conquered (征服) Mount Qomolangm a (the highest point on Earth) in1953 and the Challenger Deep (the deepest point on Earth) seven years later. But no single person had ever visited both until Victor Vescovo dived to new depths in 2019. Vescovo is a retired US Navy off...
25. Ever since humans first walked the earth, we have relied on plants for our survival. 相关知识点: 试题来源: 解析 答案见上考查时间状语从句 解析:本题句意为“自从人类第一次在 地球上迈开脚步,我们就依靠植物生 存” 。 主句所采用的时态是现在完成 时,提示应填写since ...
Ever since humans first walked the earth, we have depended on plants for our life. They p_1_ us with food, medicine and even the oxygen(氧气) we breathe.Now, a team of scientists is wondering i 2 they can protect us from climate change as well.Researchers at the Salk Institute for ...
Since humans first walked the earth, we have relied on plants for our survival. They provide us with food, shelter, medicine and even the oxygen we breathe. Now, a group of scientists is wondering if they can protect us from climate change as well. Researchers in San Diego launched a ...
Ever since humans lived on the earth,they have made use of various forms of communication.Generally,this expression of thoughts and feelings has been in the form of oral speech.When it is difficult to express withlanguage,communication is accomplished (完成) through sign language in which body ...