What does the last paragraph tell you?
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1 .The sonar devices must be placed ________.
A from time to time B after the undersea vehicle dives C at the time when the undersea vehicle is diving D before the undersea vehicle dives
2 .Which of the followings is NOT MENTIONE in the passage?
A New techniques are continually developed and new machines invented for undersea exploration. B If not well built, a submersible is most likely to get crushed in deep water. C A submersible, when manned, looks very much like a spaceship. D In certain respects, undersea exploration is often faced wi...
3 .Which of the followings is NOT correct?
A Tap water reflects the concentrations of hydrogen and oxygen isotopes in different regions. B Tap water is a kind of soft drink in the United States. C Tap water contains unique proportions of isotopes of hydrogen and oxygen. D Tap water is used t cook food.
4 .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
5 .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.
7 .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.
8 .What does the new study mentioned in Paragraph 1 find?
A Hungry people see every word more clearly than ordinary people． B Hungry people are always thinking of food—related words． C Hungry people are more sensitive to food—related words than stomach—full people． D Hungry people do not have lower—level of thinking process．
9 .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.
