In comparison to statistics from the 1970s, today in the United States surveys find that cigarette smoking by adolescents has:
a. increased substantially
b. increased slightly
c. remained about the same
d. declined substantially
d
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Which expression is a sentence?
A) dogs B) the dogs C) the dogs, who were barking very noisily D) dogs bark
Four-year-olds think dreams are real because of artificialism
Indicate whether the statement is true or false
A boy is teaching his younger sister how to make her bed. At first, he tells her she did a good job if she gets the bedspread pulled up, even if the sheets are still rumpled. Each following day,
he encourages her to be a little neater before telling her she did a good job. The boy may not know it, but he is using a. secondary reinforcement. b. primary reinforcement. c. a fixed-interval schedule. d. shaping by successive approximations.
After several months to years with no symptoms, HIV-infected persons may develop minor health problems such as weight loss, fever, and night sweats-symptoms that make up the condition known as
A. AIDS-related complex (ARC). B. generalized AIDS. C. HIV reaction. D. HAART symptoms.