16．Generally speaking，kids are curious about the world around them．For instance，they want to know how their hearts beat．They want to know why the ocean water tastes salty．
As 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，and the sky．Later，they become interested in the things that people have made：wheels，bicycles，cars．And when they are adults，their curiosity continues．Sometimes this curiosity leads to a career in science．
Scientists spend their lives trying to find out about the world．Those who work with the earth sciences study the earth，the oceans，and the skies．Other scientists who study living things work with the biological sciences．A third group of scientists study the physical sciences，e．g．physics and chemistry．
These scientists have already discovered a lot about our world．For example，they tell us why your heart beats fast when you run．They say that when you are quiet，your heart normally beats sixty-five or seventy-five times a minute．Your heart is a pump （泵） that pumps blood to all parts of the body．The blood carries oxygen and nutrition．When you run，your muscles work very hard and use the nutrition that the blood carries to them．The muscles need oxygen，too．So your brain sends a signal to the heart．The signal means that the muscles need more nutrition and oxygen．Then the heart beats fast and sends blood quickly to the muscles．It may beat 90to 140times a minute．
Of course，scientists cannot answer all of our questions．If we ask，"Why does the ocean water taste salty"scientists will say that the salt comes from rocks．When a rock gets very hot or very cold，it cracks．Rain falls into cracks．The rain then carries the salt into the earth and into the rivers．The rivers carry the salt into the ocean．But then we ask，"What happens to the salt in the ocean？The ocean does not get saltier every year．"Scientists are not sure about the answer to this question．
We know a lot about our world，but there are still many answers that we do not have，and we are curious．
66．According to the passage，which of the following statements is true？D
A．People are curious in the same way．
B．People in different countries are interested in different things．
C．Men and women are curious about different things．
D．People of different ages are interested in different things
67．Scientists who work with the biological sciences studyB．
A．the earth，the oceans and the sky
B．plants and animals
C．man-made things
D．ocean water
68．When you run，your muscles needC．
A．more salt
B．more signals
C．more nutrition and oxygen
D．water
69．A rock cracksD．
A．in wet regions
B．in dry regions
C．when salty water falls in
D．a(chǎn)t very high or very low temperatures
70．Based on the information in the last paragraph，we can infer thatB．
A．We have known everything about the world so we should stop being curious．
B．Curiosity can drive us to make new discoveries about the world in the future．
C．In order to answer as many questions as we can，we should be curious．
D．Curiosity leads to a career in science．
分析 人類天生對我們周圍的世界充滿好奇，正是這種好奇心讓我們探索周圍的事物，帶來了科學(xué)的發(fā)展．保持一顆好奇心，未來我們會有更多的發(fā)現(xiàn)和進(jìn)步．
解答 答案：66-70 DBCDB
66．D 細(xì)節(jié)理解題．文章第二段說As 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，and the sky．Later，they become interested in the things that people have made：wheels，bicycles，cars．And when they are adults，their curiosity continues．Sometimes this curiosity leads to a career in science孩子們隨著年齡的增長，對不同的事物很好奇．故選D．
67．B 細(xì)節(jié)判斷題．文章第三段說Other scientists who study living things work with the biological sciences研究生物科學(xué)的科學(xué)家們研究活的事物．故選B．
68．C 細(xì)節(jié)理解題．文章第四段說When you run，your muscles work very hard and use the nutrition that the blood carries to them你跑步時(shí)，肌肉要消耗血液中的養(yǎng)分．故選C．
69．D 細(xì)節(jié)判斷題．文章第五段說When a rock gets very hot or very cold，it cracks當(dāng)巖石過冷或過熱時(shí)會裂開．故選D．
70．B 推理判斷題．文章最后說We know a lot about our world，but there are still many answers that we do not have，and we are curious我們了解了世界上很多東西，但還有很多我們不知道的東西，我們對此很好奇．故選B．
點(diǎn)評 閱讀理解是考查語篇理解能力．常考的題型有：推理判斷題；主旨大意題；細(xì)節(jié)理解題；猜測詞意題．近幾年又出現(xiàn)了兩種新的考查方式：寫作態(tài)度判斷題和文章結(jié)構(gòu)題．解題時(shí)，在讀懂文章的基礎(chǔ)上，還有特別注意掌握題型的特征，尤其是細(xì)節(jié)題和推斷題不可混淆：細(xì)節(jié)題是文章信息的再現(xiàn)；推斷題是文章信息的提�。绢}是廣告類文章，考查主要是以細(xì)節(jié)題為主，細(xì)節(jié)題要注意常用的出題陷阱有：夸大，縮小，張冠李戴，偷梁換柱，無中生有等，做題時(shí)要看清看準(zhǔn)．
