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【单选题】
下列哪一项论述不正确A.
队列研究资料较可靠，发生偏差较少
B.
队列研究较易分析病因的作用
C.
病例对照研究的优点是材料易于收集 ．，
D.
队列研究常用于探索罕见疾病的各种因素
E.
队列研究比病例对照研究费时、费人力、’费钱
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皮皮学刷刷变学霸
举一反三
【单选题】Task 3 Healthy trees are important to us all. Trees provide shade, beauty, and homes for wildlife. Trees give us products like paper and wood. Trees can give us all these only if they are healthy. The...
A.
beautiful
B.
healthy
C.
old
D.
young
【多选题】不可抗力事故引起的法律后果是。
A.
遭遇事故的一方可要求损害赔偿
B.
遭遇事故的一方可要求解除合同
C.
遭遇事故的一方可要求延期履行合同
D.
遭遇事故的一方可要求交付替代货物
【简答题】世界上最强大的两个寒流是:( )()
【单选题】The author seems to be rather ______ about his disease.
A.
patient and optimistic
B.
impatient and pessimistic
C.
impatient but optimistic
D.
indifferent but impatient
【单选题】Task 2 Healthy trees are important to us all. Trees provide shade, beauty, and homes for wildlife. Trees give us products like paper and wood. Trees can give us all these only if they are healthy. The...
A.
beautiful
B.
healthy
C.
old
D.
young
【简答题】Healthy trees are important to us all. Trees provide shade, beauty, and homes for wildlife. Trees give us products like paper and wood. Trees can give us all these only if they are healthy. They must ...
【多选题】不可抗力事故引起的法律后果是( )。
A.
遇事故的一方可要求损害赔偿
B.
遇事故的一方可要求解除合同
C.
遇事故的一方可要求延期履行合同
D.
遇事故的一方可要求交付替代货物
【单选题】All trees must_____well when it is dry.
A.
be water
B.
watering
C.
water
D.
be watered
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