What can we do to keep error to a minimum? First of all，don t let your emotions interfere with your vision. Don t see something because you want to see it. Secondly，try to stay relaxed. If you are tense，you are likely to see red when the color is blue. And finally，it helps to make notes of what you see. Don t rely on your memory alone. Take pictures，make recordings，and use any other aid to reduce distortion（歪曲）.

26.The main idea of this passage is that_____. 【  】
A. all of us rely on what we see
B. we can t completely trust what we see
C. sworn eyewitnesses are unreliable
D. fans usually disagree with the referee

27.The passage suggests that fans at sport events _____. 【  】
A. show no respect for the truth
B. lie about what they see
C. are controlled by emotion
D. have no faith in the referee

28.Statistical studies show that_____. 【  】
A. courtroom testimony only confuses the judge
B. courtroom testimony is often unreliable
C. eyewitnesses are remarkably accurate
D. eyewitnesses tend to conceal what they see

29.The word“them”（Paragraph3）refers to_____. 【  】
A. the judges and the trial procedure
B. the witnesses and their testimony
C.83percent of the cases
D. the height，age and hair color of the criminal

30.In order to keep error to a minimum，we are advised to _____. 【  】
A. separate our emotions from what we see
B. improve our memory of what we see
C. get a better look at what we are interested in
D. concentrate on what makes us relaxed

Passage Three

Questions31 to 35 are based on the following passage.

    When children learn a language，they learn the grammar as well as the words or vocabulary. No one teaches them; children just“pick them up”.

    Before babies begin to produce words，they produce sounds. Some of these sounds will remain if they occur in the language being acquired，and others will disappear. This is called the“babbling（牙牙学语）stage”.

    A child does not learn the language“all at once”.The child s first utterances（言语）are one-word sentences. After a few months，the two-word stage arises. During this stage，the child puts two words together. These two-word sentences have definite patterns and express grammatical and meaningful relationships. Still later，in the telegraphic stage，the child will produce longer sentences. These longer sentences are mainly made up of content words. The child s early grammar lacks many of the rules of the adult grammar，but eventually it will become mature.

    All normal children everywhere learn language. This ability is not dependent on race（种族），social class，geography，or even intelligence. This ability is uniquely human.

31.This passage is mainly about _____. 【  】
A. the difference between a child s language and an adult s
B. ways of teaching babies to talk
C. children s learning of the mother language
D. the importance of learning foreign languages

32.The phrase“pick them up”（Line2，Paragraph1）means“ _____”. 【  】
A. raise them from the ground
B. learn them without much effort
C. use hands to help carry them
D. study very hard and remember them

33.During the“babbling stage”，babies_____. 【  】
A. can only produce sounds 
B. learn to walk steadily
C. can understand people’s talk
D. begin to produce two-word sentences