A.10
B.20
C.30
D.40
第1题
Which is NOT a possible cause of mental retardation?
A.Alcohol or drug abuse.
B.Abnormal genes from the parents.
C.a well-planned pregnancy.
D.Problems during childbirth.
第2题
Which is NOT a possible cause of mental retardation?
A.Alcohol or drug abuse.
B.Abnormal genes from the parents.
C.a well-planned pregnancy.
D.Problems during childbirth.
第3题
Which of the following is NOT the cause for destruction of aborigines?
A.Drugs
B.Alcohol
C.Money
D.Disease
第4题
Which of the following is NOT a cause of drought?
A.Unwise fanning practices.
B.Fast evaporation of moistures.
C.Water shortages.
D.Rising up of temperature.
第5题
Which of the following germs do not cause diarrhea illness?
A.Pseudomonas Aeruginosa.
B.Shigella, and E. Coli.
C.Giardia.
D.Cryptosporidium.
第6题
Which of the following is NOT a cause of increasing decline of wild animal population?
A.Exploitation.
B.Pollution.
C.Habitat alteration.
D.Congressional law.
第7题
Which of the following is a possible cause of the colony-collapse disorder?
A.Population explosion.
B.Decreasing number of flowers around
C.Genetically modified products.
D.Diseases and chemicals.
第8题
Which of the following is a possible cause of the colony-collapse disorder?
A.Population explosion.
B.Decreasing number of flowers around.
C.Genetically modified products.
D.Diseases and chemicals.
第9题
Which of the following is a possible cause of the colony-collapse disorder?
A.Population explosion.
B.Decreasing number of flowers around.
C.Genetically modified products.
D.Diseases and chemicals.
第10题
Which of the following is the cause of working longer hours stated by the writer?
A.Expansion of basic needs.
B.Cultural differences.
C.Increase in real earnings.
D.Advertising.
为了保护您的账号安全,请在“上学吧”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!