将下列动物所属类别和生殖发育特点用线连接起来：
蝗虫----两栖类----变态发育
青蛙----昆虫----不完全变态
家鸽----鸟类----胎生、哺乳
家兔----哺乳类----孵卵、育雏．
蝗虫是昆虫类，它的发育经过了受精卵、若虫、成虫三个时期，是不完全变态发育．青蛙属于两栖类，它是水中产卵，水中受精，幼体和成体的形态结构和生活习性差异很大，是变态发育．家鸽属于鸟类，其生殖发育过程一般包括求偶、交配、筑巢、产卵、孵卵和育雏这几个阶段．家兔是哺乳动物，其特有的生殖特点是胎生哺乳．
故答案为：
| 完形填空。 | |||
| James's New Bicycle James shook his money box again.Nothing!He carefully 1 the coins that lay on the bed.$24.52 was all that he had.The bicycle he wanted was at least $90! 2 on earth was he going to get the 3 of the money? He knew that his friends all had bicycles.It was 4 to hang around with people when you were the only one without wheels.He thought about what he could do.There was no 5 asking his parents,for he knew they had no money to 6 . There was only one way to get money,and that was to 7 it.He would have to find a job. 8 who would hire him and what could he do?He decided to ask Mr.Clay for advice,who usually had 9 on most things. "Well,you can start right here," said Mr.Clay."My windows need cleaning and my car needs washing." That was the 10 of James's odd job(零工) business.For three months he worked every day after finishing his homework.He was amazed by the 11 of jobs that people found for him to do.He took dogs and babies for walks,cleared out cupboards,and mended books.He lost count of the 12 of cars he washed and windows he cleaned,but the 13 increased and he knew that he would soon have 14 for the bicycle he longed for. The day 15 came when James counted his money and found $94.32.He 16 no time and went down to the shop to pick up the bicycle he wanted.He rode 17 home,looking forward to showing his new bicycle to his friends.It had been hard 18 for the money,but James knew that he valued his bicycle far more 19 he had bought it with his own money.He had 20 what he thought was impossible,and that was worth even more than the bicycle. | |||
| ( )1.A.cleaned ( )2.A.How ( )3.A.amount ( )4.A.brave ( )5.A.point ( )6.A.split ( )7.A.borrow ( )8.A.Or ( )9.A.decisions ( )10.A.beginning ( )11.A.similarity ( )12.A.brand ( )13.A.effort ( )14.A.all ( )15.A.finally ( )16.A.gave ( )17.A.patiently ( )18.A.applying ( )19.A.since ( )20.A.deserved | B.covered B.Why B.part B.hard B.reason B.spend B.earn B.So B.experience B.introduction B.quality B.number B.pressure B.enough B.instantly B.left B.proudly B.asking B.if B.benefited | C.counted C.Who C.sum C.smart C.result C.spare C.raise C.For C.opinions C.requirement C.suitability C.size C.money C.much C.normally C.took C.silently C.looking C.than C.achieved | D.checked D.What D.rest D.unfair D.right D.save D.collect D.But D.knowledge D.opening D.variety D.type D.trouble D.some D.regularly D.wasted D.tiredly D.working D.though D.learned |