He succeeded in his experiment second time.but he did it third time to make sure．( )A．a, aB．a, theC．the, theD．the, a 题目和参考答案——青夏教育精英家教网—

题目内容

14．He succeeded in his experiment second time，but he did it third time to make sure．（　　）

A．

a； a

B．

a； the

C．

the； the

D．

the； a

分析第二次他的实验成功了，可他为了保险起见又试了一次．

解答答案：D
题干中the second time表示第二次，是序数词的用法，要用定冠词；但third time是表示再一次，又一次，是在原有数量上的增加，不表示排序，要和不定冠词连用．故选D．

点评冠词是一种虚词，本身不能独立使用，只能放在名词前帮助说明名词所指的人或事物，它是英语词性中最小的一类，只有三个，一种是不定冠词a，an；一种是定冠词the．此外也有些特定场合不用冠词，即通常所称的零冠词．不定冠词表示泛指，定冠词表示特指．

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5．As people ___ more wealth，they tend to spend a greater share of their incomes．（　　）

2．假如英语课上老师要求同桌之间交换修改作文，请你修改你同桌的以下作文．文中共有l0处错误，每句中最多有两处．错误涉及单词的增加、删除或修改．
增加：在缺词处加一个漏词符号∧，并在此符号下面写出该加的词．
删除：把多余的词用斜线\划掉．
修改：在错词下面划一横线，并在该词下面写出修改后的词．
注意：1、每处错误及其修改均仅限一词；
2、只允许修改l0处，多者从第11处不计分
When I was an elementary school student aging ten，I took part in a singing competition in our city．This was my first time to be in a singing competition．In the day of the competition．I was asked to enter into a studio room，which there was only one person and a piano．The man asked me to sing in front of the microphone，following his piano playing．My mother was waiting for me outside the studio．I thought that I sang better at the time．So when I finished and walked out the studio，my mother asked，"What happened to your voices？Why couldn't we hear you？"Then，I realized that I forget to switch on the microphone．

9．I told him not to go，but he _____ listen．Look，what trouble he has caused!（　　）

19．此题要求改正所给短文中的错误、对标有题号的每一行作出判断：如无错误，在该行右边横线上画一个勾（√）；如有错误（每行只有一个错误），则按下列情况改正：
该行多一个词：把多余的词用斜线（\）划掉，在该行右边横线上写出该词，并且也用斜线划掉．
该行缺一个词：在缺词处加一个漏字符号（∧），在该行右边横线上写出该加的词．
该行错一个词：在错的词下划一横线，在该行右边横线上写出改正后的词．（　　）
注意：原行没有错的不要改．
Wisdom knows no age．One day at a county fair a"medicine man"（66）√was try to draw attention by auctioning off （拍卖） a dollar bill．（67）将try改为tryingEveryone thought the dollar was false，but the only offer he received（68）but改为andwas one for five cents from a twelve-years-old boy．"Going once!（69）twelve-year-oldGoing twice!Going three time!"calling the man．"The dollar（70）calling改为calledis mine，young man!Where is your five cents？"When the boy（71）mine改为yoursstepped backward，he heard someone laugh and say，"You just（72）backward改为forward或uplose five cents，boy．"The boy looked up at the"medicine man"（73）lose改为lostas he held out of the dollar，and said，"Why don't you just take（74）去掉offive cents out of the dollar，mister，and give me change？"（75）change前加the．

6．I have sent several e-mails to the company for the advertised job，none of _____ has been answered．（　　）

3．My grandfather is a（61）retired （retire） worker．On summer evenings，he would gather us outside the house to enjoy the cool air，（62）sharing （share） his experiences before liberation．
At the age of fourteen，my grandfather worked as a child laborer in a coal mine．One day，he and his two workmates were working in the tunnel（63）when an unfortunate thing happened．A part of the tunnel fell down and they were shut in．They had no food（64）toeat （eat） in the tunnel．When they were hungry，they only drank some water．Because （65）it was very cold there，they just hug one another in order to keep warm．They could hardly speak or move as a consequence of physical（66）weakness （weak） and thought they would die．
After（67）what seemed a long time，the tunnel was dug through and they（68）wererescued （rescue）．They had been trapped there for fourteen days!My grandfather said they weren't let out at once．If so，they（69）would havedied （die）．They were kept at the entrance to the tunnel where it was very dim and were fed on some thin porridge．After a day or two，they had recovered a bit and were（70）eventually （eventual） helped out．

11．You may not know it but on our biosphere （生物圈）-Earth-there is also a relatively unknown world hiding in plain sight．It is made up of microbes （微生物） that live on floating pieces of plastic floating on the ocean．
This"Plastisphere"of microbial organism living on ocean plastic was first discovered last year and it is now getting studied．When researchers first examined the Plastisphere，they found at least 1，000different types of microbes living on the tiny plastic islands，and worried that they might cause a risk to larger animals and humans．They also found that the Plastisphere's microbes included bacteria known to cause diseases in animals and humans．Since then，researchers have been trying to figure out why these potentially dangerous bacteria live on the Plastisphere，how they gt there and how they are affecting the surrounding ocean．
New evidence suggests that"super-colonizers"form seeable clusters （丛） on the plastic in minutes．Other findings indicate that some types of harmful bacteria favor plastics more than others．And，scientists are exploring if fish or other ocean animals may be helping these pathogens （病原体） develop quickly by taking in the plastic．That could allow bacteria to acquire additional nutrients as they pass through the guts（肠子） of the fish，said Tracy Mincer，an associate scientist at Woods Hole Oceanographic Institution in Woods hole．Mass．
Showing this information could help scientists better understand how much of a potential threat these harmful bacteria cause and the role the Plastisphere plays in the largest ocean ecosystem，including its potential to change nutrients in the water．That information could also help reduce the impact of plastic pollution in the ocean，Mincer said．

28．Researchers are worried about the microbes living on the floating pieces of plastic because．B
A．they might break the balance of the ecosystem in the sea
B．they might cause diseases to sea animals or humans
C．they will make the sea polluted more severely
D．they may reduce the food for the fish in the sea
29．How long does it take the microbes to form seeable clusters．on the plastic．D
A．Several years．
B．A week
C．A few seconds．
D．A few minutes
30．What s the passage mainly about？C
A．The latest research on the Ocean．
B．Plastisphere affecting the surrounding Ocean．
C．The secret world of the floating ocean Plastisphere．
D．Worries about the microbes on floating pieces of plastic．
31．What can we infer from the last paragraph？C
A．The process of the study still has a long way to go．
B．The potential threat of the bacteria does great harm to animals and humans．
C．The study is of great significance．
D．Scientists are studying further information about the microbes．