_________ the development of science,job positions are becoming fewer and fewer,so many people are worried about ________ they would be out of work.　A.With; if B.As; whether 　C.With; whether D.As; if选哪个,为什么

Many of the techniques of modern advertising _________ in magazine ads． A.developed B.was develo 翻译：This crop does not do well in soils other than the one for which it has been specially develo 英语翻译________ _________ _________ _________ the children are having! 英语翻译1.2.Previous studiesSchaffer was one of the pioneers in the field of computer aided progressive die design [1].In 1971,he developed PDDC (Progressive Die Design by Computer).Later,a wide number of researchers followed the issue and develo 英语翻译The days _________ ________ and the nights _________ _______. 英语翻译The flower are____and________ _________. Open the door,_________ ________? The _________ place is desert The twins are _________(difference). 英语翻译that is the boy we _______ _________ _________. l______ _________ _________ __________ （take）part in the meeting washington is the _________ of the USA. 英语翻译the body__________in the doorway _________. How is the weather in Beijing?(句意不变)How is the weather in Beijing?(句意不变) ________ the weather ________ in Beijing?_________ _________ the weather _________ _________ in Beijing?_________ _________ the weather _________ in Beijing? 翻译：失物招领处里有什么?What`s ________ the _________ _________ _________ case?选自典中点 翻译：失物招领处里有什么?What`s ________ the _________ _________ _________ case?选自典中点 Mr Black _________ _________（not come）from the UK._________ Mike _________ Ben how to get there now?(ask) 英语翻译TianJing,a city standing by BoHai Sea,shares a great develo-pment of industry.It is famous for its oversea commodities which are real bragins.The environment of the city is getting better as well,and more and more foreigners are attracted