t is natural for there to be a generation gap between the parents and their children为什么用for 而不用that ,不是there be的不定式做主语吗,那么还原后不就多个FOR吗

英语单选题,a.seldom is the animals'natural behavior noticedb.seldom the animals'natural behavior is noticedc.he animals'natural behavior is noticed seldomd.seldom does the animals'natural behaviornoticed______because zoos don't usually provide a t is natural for there to be a generation gap between the parents and their children为什么用for 而不用that ,不是there be的不定式做主语吗,那么还原后不就多个FOR吗 Mike is the natural food for young babies.什么意思啊? guilin is well known for its natural beauty,especially the caves.请帮忙翻译一下 谢谢 The natural ________ is good for all of us to live Julia Roberts has gone for the natural Julia Roberts has gone for the natural look. 什么是a fancy wordWe start with extraction,which is a fancy word for natural resource exploitation,which is a fancy word for trashing the planet. The country is a p_____ in natural resouThe country is a p_____ in natural resourcees填空 英语翻译Natural ecosystems are the fundamental support for the life systems on earth,and can not be replaced by any man-made capital.The sustainable development of natural ecosystems aims to maintain the regional ecological sustainability,that is struggle for survival natural selection ,survival of the fittest是什么意思? 英语翻译,for the HFCs for environmental reasons and for the natural refrigerants for safety reasons. 英语翻译“We get asked if there is going to be a Wii U version of Borderlands,and the reason why there’s not is because we couldn’t think of a 'natural,obvious OMG-I-want-that-for-what the-Wii-U-brings-to-the-table feature, Pitchford told G I think It is natural for you not to get used to the life there.Here I have some suggestions for you 哪些英文歌中有 is't the so .serach for is't the so .waiting for It is that joe should pass the exam 选nature natural老师说选natural 英语翻译LETTING GO TAKES LOVETo let go does not mean to stop caring,it means I can't do it for someone else.To let go is not to cut myself off,it's the realization I can't control another.To let go is not to enable,but allow learning from natural 第九届创新英语大赛初赛 topic:natural disasters,Topic:Natural Disasters这个natural disasters Topic:Natural DisastersDirection:A natural disaster is the effect of a natural hazard (e.g.flood,drought,tornado,volcano eruption,earthquake,typh The Nutritional Anaysis is subject to some natural variation.怎译?