判断，阅读下面的材料，判断句子是否符合短文内容，正确的用“T”表示，错误的用“F”表示，文章未提到的写N

　　“Millions of young people will lose their hearing in five years if they listen to MP3 players at a too high voice every day”Scientists say recently．

　　What do you think after knowing the information?Do you often listen to MP3 players at a too high voice?Are you scared?

　　The sizes of MP3 players are very small, but small MP3 players make it easy to take hundreds of songs with you．So many young people carry them and listen to music every day．MP3 players are very popular among students．

　　The scientists say teenagers should be far from high volume(音量), including mobile phones' noise．A study says“High volume and long listening time can cause hearing problems”They think if young people listen at more than 89 clecibels(分贝)every day, they'll lose their hearing in five years．A scientist said“So many young people often use personal music players and mobile phone at a high voice．I'm afraid that they may be unknowingly losing their hearing．”

　　So let's turn our MP3 players down．

(1)

(2)

(3)

(4)

(5)

完形填空

阅读下面短文，理解其大意，然后从各题所给的四个选项中，选出可以填入空白处的最佳选择。

　　Once there were several scientists in a forest．They were trying to 　　1　　the rarest animal in the world．No one had seen it ,so everyone was 　　2　　 and wanted to be the first one to photograph and study it．

　　The animal only came out at night, 　　3　　the scientists did some other studies in the day．　　4　　them,there was a famous scientist named Walter．Every day,he would spend an hour sitting at the desk and putting all his equipment(设备)in the 　　5　　place．He did this carefully．But other scientists laughed at him because they thought Walter was just wasting 　　6　　．

　　One night,the animal appeared 　　7　　The scientists heard its call．But the call didn't last long．The animal was frightened by the 　　8　　 made by the scientists while they were scrabbling(忙乱地找)for their cameras and notebooks．

　　On the next morning,the scientist 　　9　　their fingings．Some had tried to record its call,others had noted down how it moved,and the luckiest one had even photographed parts of its tail and legs．They all congratulated each other on what they had found．However,when they saw what Walter had,they were very surprised．　　10　　had taken several complete(完整的)photos,the record of the animal's cry and notes about the animal．

　　They ran to congratulate Walter．They now understood the importance of keeping things in order．Because of that,Walter could find everything quickly in the dark．

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

阅读下面的短文，掌握其大意，然后从短文后各题所给的A、B、C、D四个选项中，选择最佳选项。

　　IQ(intelligence quotient智商)is a score that shows a person's level of intelligence．

　　People used to believe that some people are born with a high IQ and some aren't．

　　　　1　　 , a study by scientist at University College London has challenged(挑战)this idea．According to an article last October on the Journal Nature, scientists are beginning to think that our IQ is not a constant(不变的)score．

　　The scientists tested 33 healthy young people in 2004 between the ages of 12 and 16．Then they did tests again four years later, when the same people were between 16 and 20．

　　Scientists found big changes in the IQ scores between 2008 and 2004．Some 　　2　　 and some fell 　　3　　 as many as 21 points．

　　To test whether these scores were meaningful, the scientists compared them with results from brain scans(扫描)．They found that the IQ changes matched changes in the structure(结构)of the subjects’ brains．“A change in 20 points is a huge 　　4　　, ” said Professor Cathy Price, who led the research．He said it could mean the difference between an average and a 　　5　　 person．The team has not found a clear cause for these changes．However, they say it is 　　6　　 that education plays a role in changing IQ．

　　“Here we have shown that children's 　　7　　 is likely to be still developing, ” says Price．“We have to be careful not to write off 　　8　　 performers at an early stage．In fact, their IQ may improve in a few more years．”

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)