What does the new study mentioned in Paragraph 1 find?
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1 .James R. Ehleringer tried to find out ______.
A if our bodies break water down into its parts B if it is possible to collect hair samples across the country C if tap water contains unique proportions of isotopes of hydrogen and oxygen D if the composition of hair can indicate exactly where people are from
2 .Which of the following statements is meant by the writer?
A Ehleringer was successful in his research. B Ehleringer failed in his research. C Ehleringer can be a successful detective. D Ehleringer’s research proved successful in China.
3 .What does the last paragraph tell you?
A The new technique can tell precisely where a person lives. B Water supplied in different regions all comes from the same source. C Types of water used in different regions provide useful information for the police. D Hair samples provide the most important clues to identify crimes.
4 .Which of the following is closest in meaning to the main idea of the passage?
A Human hair may help detectives to solve crimes. B Animal hair may help detectives to solve crimes. C Detectives watch hairy criminals closely. D Most detectives are hair specialists.
6 .Why was there a delay on the day of the experiment?
A Because hungry people needed time to fill their stomach. B Because Adel wanted to create two groups of testees, hungry and non-hungry． C Because noon was not the right time for any experiment. D Because Radel needed time to select participants in terms of body mass index.
7 .What did the results of the experiment indicate?
A 80 words flashed on the screen too fast for the participant to intentionally perceive. B Hungry people were better at identifying neural words. C People who had just eaten were better at identifying food．related words. D The participants could barely perceive what they needed or what they strive...
