预防接种弱反应()
A.红肿直径在1.5cm以下
B.红肿直径在1.6~2.5cm
C.红肿直径在2.5cm以下
D.红月中直径在2.6~5cm
E.红肿直径在5cm以上
参考答案:C
The girl planned to have dance lessons at the training centre with her friend ______ she would stay for an hour.
A.who
B.where
C.what
D.which
食管癌的典型症状是()
A.食管内异物感
B.胸骨后烧灼感
C.咽下食物停滞感
D.咽下食物梗噎感
E.进行性吞咽困难