On hatching,______A.young ducks know how to swim B.swimming is known by young ducksC.the knowledge of swimming is gained by young ducksD.how to swim is know in young ducks选什么?为什么?

On hatching,______A.young ducks know how to swim B.swimming is known by young ducksC.the knowledge of swimming is gained by young ducksD.how to swim is know in young ducks选什么?为什么? There ______a pair of jeans on the bed .____mine. 英语翻译This study investigated aspects of salinity on hatching viability and growth performance of fishto use as a measure for aquaculture in brackish water.The experiments were carried outunder controlled laboratory conditions.The hormonal indu Marry is ______a red dress today.(putting on,wear,wearing,having on) He works ______a middle school.A.on B.of C.in D./ 用at on in填空 ______Mid-Autumn Day.______a quarter to ten_____the 21 century______a cold morning We are talking ______a low voice.A.with B.in C.on D.about 为什么? I have ______a seat on the plane,but the flight was canceled.(book) After reading the letter we went on ______a reply.to writewritewritingwritten ______a nice cool summer eveningA.in B.on C.for D.at My grandpa lives ______a flat in Nanjing.A.on B.in C.at D.by Mr.Smith ,a friend from America ,invited me ______A.to dinnerB.dinnerC.on dinnerD.have dinner 34.From the text we know that ‘a commercial hen’ _____.A:produces infertile eggs B:has a special ability of hatching eggs C:can easily become broody D:is very good at laying eggs 36.How many eggs did Liz and Apathy sit on?A:15 B:40 C:25 D:41 40.T The boys are lying on the beach,with their eyes ______A opening B opened C to be open D open you can give him a ticket ______a ball game.A.on B.of C.in D.to I want to know ______A.whose ruler is on the floorB.what time it is选哪个why ______a true story,this film attracts many film-goers.A.Based on B.Basing on C.To base on D.Based My aunt arrived here ______a warm spring morning.用on还是用inHe was born___ a July night.用on,at还是用inthanks