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【单选题】
下列有关食管癌的表述中哪项是错误的A.
中国是食管癌的
B.
河南林县食管癌的发病率世界最高
C.
抗氧化营养素和蔬菜、水果有降低食管癌发生的趋势
D.
中国人食管癌病理类型以腺癌为主
E.
食管癌的病因因素复杂
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举一反三
【单选题】The chief cause of loss for the nursery crops before marketed may be _____________ .
A.
desciccation during storage
B.
warming during storage
C.
lacks of cold-storage facilities at retail outlets
D.
all of the above
【单选题】Which type of the nursery crops is spruce? _____________
A.
roses
B.
broad-leaved evergreens
C.
deciduous plants
D.
coniferous evergreens
【单选题】What's the public opnion about the nursery staff?
A.
They should focus on managing the parents.
B.
They should focus on caring for the children.
C.
They should send more reports to the nursery.
D.
They should send more pictures to the parents.
【单选题】The ____ of new scientific discoveries to industrial production methods usually makes jobs easier to do.
A.
addition
B.
association
C.
application
D.
affection
【简答题】A．They had lost their jobs as a result of the Industrial Revolution. B．They had been suffering from political and religious oppression. C．They wanted to flee from the widespread famine in Northern Eur...
【单选题】What is the environmental benefit of GM crops?
A.
Herbicidetolerant crops can reduce the use of chemicals.
B.
Herbicidetolerant crops can use milder chemicals.
C.
Bt genes can protect crops against insects instead of chemical pesticides.
D.
Insect-resistant crops only need a more benign mix of chemicals .
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