【单选题】The researchers have tested their spray in the lungs.
【判断题】纺织、机械制造等企业属于大量大批的多步骤生产
【简答题】The researchers have conducted an experiment to prove that people will act in emergencies when ______ A) they are in pairs B) they are in groups C) they are alone D) they are with their friends
【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】Researchers have known for years that animals have a 'clock' somewhere in their brains a control-centre that regulates circadian(生物节奏的) rhythms. Circadian rhythms are the body's daily biological cycle...
【判断题】退田文书的退田原因有“死退”、“剩退”等多个方面。
【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.
【判断题】在采购或再采购任何商品之前,零售商应收集有关顾客需求的数据,以便采购适销对路的商品。( )