光子为什么不能静止

页岩气是什么? ∩__∩ ①Studies show that people are more __ to suffer from back problem if they always sit before computer screens for long hours.A.likely.B.possible.C.probable D.sure.②If you repeat the same good habits each day,you will be more___to continue That was the first time Dad had counted on me in a moment of emergency.More importantly,I found it was my turn to start 40.______for my father.A.making up\x05\x05\x05B.getting ready\x05\x05C.paying off\x05\x05D.looking out That was the first time in more than thirty years as a job holder that Coleman had heard such words.我不理解这个句子.是不是it is the first time that .这个句子呢?再说我对it is the first time that .这个句子也不理解. That was the first time (that) I had been in Rome.为什么用过去完成时?“第一次”和“到罗马”怎样体现出过去的过去? we are pleased that more people want to____ factoriesA look up B clean up C open up Studies show that many people's eyes now never get to the stage ___they……Studies show that many people's eyes now never get to the stage ___they are fully adapted to darkness.A.which B.when C.where D.what这题选什么?为什么? 什么叫“页岩气”,有毒吗? what,you,would,like?连词成句 Do you like salad是什么意思? “宽”用英语怎么说? Do you like salad? do you like salad?Yes,l do.no,ldon't的意思 Do you cousins like salad?Yes,they like _____.A it B it's C them选择一项． 波兰人和法国人长的像吗? 波兰人来自哪里?最好是英文除了波兰的土著,有殖民的吗? what do we Do you like him中文翻译谢谢 You need to do it like him.(改为一般疑问句) Why do you like her/him?的答句是什么? How do you like him?请翻译 do you Researches show that the taller you are,the more ____ you are to suffer back painA.likely B.possible C.perhaps D.probable 求答案以及详解, some researches show that emplyees who obtain satisfaction from their jobs are more efficient. I found it was pleasant to be with your family.was是什么成分 谓语是哪个 I found it was pleasant to be with your family that为什么省略? I found it very pleasant to be with you family.to be 在这里做什么用? I found it very pleasant to be with family it后面怎么没谓语 to be用法求解 英语翻译那它的first name （名）和family name （姓）又应该叫什么呢? you are really 英语翻译Maybe we each missed a lot,but only as he passed by..Perhaps really who can't also help,how should go quietly.Always be outside interference...I just hersimply like,love,such really difficult? found she+doing\was doing具体理由