【单选题】The researchers have tested their spray in the lungs.
【单选题】After years of ______ bee dancing, the scientist found that the dances have certain patterns.
【简答题】The researchers have just completed a study of driving situations.
【单选题】The researchers have conducted an experiment to prove that people will act in emergencies when______.
D.
they are with their friends
【单选题】以下哪项描述是正确的 ?
D.
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【单选题】According to the researchers, the traditional treatment for bee stings is ______.
【单选题】The sentence in the ninth paragraph, 'researchers are not likely to have anything resembling a blood test for a mental illness soon'means that_____.
A.
mental illness can not be diagnosed by blood test.
B.
there is not a definite criterion for mental illness.
C.
researchers do not like to use blood test.
D.
techniques have gained enough progress but are still not enough for mental illness.
【单选题】以下描述是正确的是
D.
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【单选题】— What doesn't have wings? — _______________. [ ]