Children are curious about the world around them.for example

Children are curious about the world around them.for example,they want to knowtheir hearts beat.they want to know why the ocean watersalty.children grow up,they become curious about different kinds of things.When they are babies,they are interested in the parts of their bodies and in the smiles of their mothers.they become interested in the physical world around them:the plants,the animals,the sky.Later,they become interested in the thingspeople have made：wheels,bicycles,cars.And when they are adults,their curiosity sometimes this curiosity leads to ain science.Scientists spend their livesto find out about the world.who work with the earth sciences study the earth,the oceans,and the skies.scientists who study living things work with the biological sciences.A third group of scientists study the physical sciences,e.g.physicschemistry.(1) (A)what (B) how (C)which (D)when
(2) (A)feels (B) smells (C)tastes (D)looks
(3) (A) as (B)since (C)as soon as (D)as long as
(4) (A)so (B)even (C)thus (D) then
(5) (A)that (B)whom (C) why (D)in which
(6) (A)exists (B)stops (C)continues (D)decreases
(7) (A)work (B)research (C)field (D)career
(8) (A)try (B)to try (C)trying (D)tried
(9) (A)that (B)this (C)those (D)these
(10) (A)other (B) another (C)others (D)the other

孩子们对周围的世界充满好奇.例如,他们想知道自己的心跳.他们想知道为什么海水咸.孩子长大后,他们成为对各种事物感到好奇.当他们是婴儿,他们有兴趣在其机构和部分其母亲的微笑.他们成为有兴趣在他们周围的物质世界：植物,动物,天空.后来,他们成为人们感兴趣的是把事情：轮子,自行车,汽车.而当他们都是成年人,他们的好奇心有时这种好奇心引导到泉科学.科学家都为他人服务并现场了解外面的世界.谁的工作与地球科学的研究,地球,海洋和天空.谁研究的科学家与生物科学生物的工作.第三组的科学家在物理科学的研究,例如物理化学.
（1）（a）什么（b）如何（c）该（d）当
（2）（a）感觉（b）气味（c）口味（d）看起来
（3）（a）为（b）自（c）尽快为（d）只要
（4）（a）,所以（b）即使（c）因此,（d）,那么
（5）（a）该（b）人（c）为何（d）在其中
（6）（a）存在（b）停止（c）继续（d）减少
（7）（a）工作（b）研究（c）外地（d）职业
（8）（A）尝试（b）尝试（c）尝试（d）审判
（9）（A）该（b）本（c）那些（d）这些
（10）（a）其他（b）另一个（c）其他（d）其他