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【单选题】
二叉树的第k层的结点数最多为( )A.
2的k次幂-1
B.
2K+1
C.
2K-1
D.
2的k-1次幂
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【简答题】_____my second day in Canada, I began my job hunting.
【单选题】I am the ______ child ______ my family.
A.
two; of
B.
second; of
C.
two; in
D.
second;at
【单选题】On the first day of my second year at California State University at Sacramento, I saw the most gorgeous guy] He was standing alone in line at the cafeteria and looked out place. Turning to my friends...
A.
she knew the guy
B.
she enjoyed the guy's handsome appearance
C.
she wanted to satisfy, her curiosity
D.
she wanted to win the bet
【单选题】某甲亢患者，长期服用硫脲类抗甲状腺药物丙硫氧嘧啶，该患者最可能发生的最严重不良反应为（）
A.
消化道反应
B.
粒细胞缺乏症
C.
甲状腺肿
D.
甲状腺功能减退
E.
过敏反应
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