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【单选题】
特发性血小板减少性紫癜最主要的发病机制是A.
血小板功能异常
B.
凝血因子异常
C.
血液中有抗血小板抗体
D.
微血管变态反应
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【单选题】Witmer's research leads people to believe ______.
A.
Tyrannosaurus Re had lips and Triceratops had cheeks
B.
dinosaurs might have looked like mammals such as sheep
C.
dinosaurs might not have looked like what we thought
D.
dinosaurs must have looked like birds or crocodiles
【简答题】阅读理解 Living in a green area can make you live longer,according to research published today.The research also shows that the difference in life expectancy (预期寿命) between rich and poor becomes smalle...
【单选题】Why does the author say that the important part of this research began when two Harvard researchers were brought in?
A.
Until then the research had been poorly conducted.
B.
They took a multifaceted approach.
C.
The results of the original research did not make sense.
D.
Harvard had a good reputation in conducting research.
【单选题】______the South Korean conglomerates, few other firms have the research and development resources to compete in these areas.
A.
In case of
B.
In regard to
C.
With the exception of
D.
With the purpose of
【单选题】Research discovered that plants infected with a virus give off a gas that______ disease resistance in neighboring plants.
A.
contracts
B.
activates
C.
maintains
D.
prescribes
【简答题】A．Research foreign policy issues B．Communicate with the aides of other congressional representatives C．Help citizens solve problems D．Oversee local elections
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