题目内容

【题目】日全食指在地球上的部分地点太阳光被月亮全部遮住的天文现象。2016年3月9日,印度尼西亚出现日全食天象奇观。据此回答下列各题。

【1】日全食的过程中,涉及到的相关天体所构成的天体系统有

A.银河系和地月系 B. 太阳系和银河系 C.太阳系和地月系 D. 地月系和河外星系

【2】在涉及的天体系统中,较低级别天体系统的中心天体是

A.月球 B.太阳 C.地球 D.金星

【答案】

【1】C

【2】C

【解析】

试题分析:

【1】本题考查天体系统的层次。日食出现时太阳月球地球处于同一直线上,月球处于太阳和地球之间遮挡了太阳光,从而出现了日食现象。该现象涉及到的天体有地球、月球、太阳。天体系统的层次为:最高一级为总星系(即目前所知的宇宙范围),第二级为银河系和河外星系(河外星系简称星系),银河系又向下分成第三级的太阳系及其他恒星系,太阳系向下分成最低一级的地月系和其他行星系。该现象包含太阳系和地月系,。所以本题选择C选项。

【2】由上题可知,地月系的天体系统级别较低,地月系的中心天体为地球,故答案选C项。

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【题目】 完形填空(每小题1分,共20分)

阅读下面的短文,从短文后各题所给的A、B、C和D四个选项中,选出可以填入空白处的最佳选项。

I Am Truly Grateful That I Had Cancer

At the age of 10, I was diagnosed with cancer. During treatment, I understood everything but the 1 of my case. It was not until recently that I realized how sick I was then.

This November of 2015 will 2 my five years off chemotherapy(化疗) and I will be finally 3 of cancer.

I know sick children often felt blue. In order to help brighten their 4 , I created a program through which I brought celebrities(名人) children 5 and respected to visit them in hospitals. The 6 I received from being able to 7 up the childrens day was indescribable.

This fall, I will 8 my junior year of high school. I love learning and I truly 9 the time spent in school because during chemotherapy treatments I was often too 10 to attend. Another big part of my life is 11 activity. During my treatment it was very hard for me to walk let alone 12 . After finishing chemotherapy my main 13 was being able to run and play 14 again. Im overjoyed to say Ive been able to 15 that aim. Being able to stand on the court and play sports again is a(n) 16 feeling.

To me its important to convey a 17 of positivity and hope that anyone can make the most of any situation in life. Many dont /span> 18 and think its strange when I say this, but Im truly grateful that I had cancer. Having experienced that, I have become brave 19 have also gained appreciation for life. I know with determination everyone can follow their 20 .

【1】A. development B. seriousness C. name D. cause

【2】A. mark B. end C. begin D. reward

【3】A. warned B. informed C. suspected D. cured

【4】A. spirits B. future C. rooms D. way

【5】A. attracted B. impressed C. admired D. missed

【6】A. respect B. joy C. gift D. education

【7】A. make B. clear C. clean D. light

【8】A. enter B. leave C. visit D. drop

【9】A. kill B. save C. treasure D. waste

【10】A. young B. weak C. lazy D. busy

【11】A. mental B. indoor C. physical D. social

【12】A. swim B. lie C. jump D. run

【13】A. goal B. task C. problem D. idea

【14】A. cards B. chess C. sports D. music

【15】A. further B. kick C. set D. achieve

【16】A. amazing B. puzzling C. satisfying D. touching

【17】A. note B. message C. word D. wish

【18】A. speak B. apologize C. understand D. remember

【19】A. and B. but C. or D. so

【20】A. steps B. examples C. suggestions D. dreams

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