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The author uses power walking as an example mainly because______
A． it is an outdoor sport
B． it improves our health
C． it uses fewer resources
D． it is recommended by experts
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The author uses power walking as an example mainly because _________.A. it is an outdoor sportB. it improves our healthC. it uses fewer resourcesD. it is recommended by experts
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单选题Which of the following statements is correct regarding a hybridcrypto system？（）A
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the power of creativity and intelligence.D
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单选题The author uses the example of cancer patients to show that ______.A
medical resources are often wastedB
doctors are helpless against fatal diseasesC
some treatments are too aggressiveD
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harmful to people’s lifeB
destructive to our ecosystemC
dangerous to plants and animalsD
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单选题The author uses the example of a monkey to argue that robots are ______.A
expected to copy human brain in internal structureB
able to perceive abnormalities immediatelyC
far less able than human brain in focusing on relevant informationD
best used in a controlled environment
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