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【单选题】
存在于黏膜表面的Ig主要是A.
IgG
B.
IgM
C.
IgA
D.
IgD
E.
IgE
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举一反三
【单选题】Passage Two Questions 62 to 66 are based on the following passage. When next year’s crop of high-school graduates arrive at Oxford University in the fall of 2009, they’ll be joined by a new face; Andr...
A.
Institutions worldwide are hiring administrators from theU.S.
B.
A lot of political activists are being recruited as administrators.
C.
American universities are enrolling more international students.
D.
University presidents are paying more attention to funding-raising.
【单选题】According to the passage, a teacher's duty is to ______.
A.
provide students with help when it is needed
B.
find out students' mistakes and correcting them
C.
teach students knowledge essential for their future life
D.
help students find out correct answers
【简答题】...and no one has any idea where it will go as it m________ or l______and s_______ or just g______.
【单选题】在我国白喉已属少见病。今年计划免疫调查中发现某些省市仍有地区性流行，并且发病年龄推迟，成人发病明显增多。为预防本病的扩散应采取以下哪项措施（）
A.
管理传染源，隔离治疗病人
B.
密切接触者，隔离观察7天，带菌者，用抗生素治疗7天
C.
病人的鼻咽分泌物及所用物品应进行消毒
D.
保护易感人群，按计划免疫程度注射疫苗
E.
以上全对
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