下载APP
举一反三
【单选题】男，23岁，反复发作黏液脓血便伴左下腹痛3年余。多次大便细菌培养阴性，抗生素治疗无效，否认结核病史及急性细菌性痢疾病史，否认疫水接触史。PE：T37.8℃，HR95次／分，贫血貌，心肺（-），腹平软，左下腹轻压痛，无反跳痛，未及明显包块。Hb70g/L，WBC11.5×109/L，其中N72.5%，L24.8%，ESR38mm／h，CRP45mg/L，PPD试验（1：10000）：（-），结核芯片...
A.
1h
B.
2h
C.
3h
D.
4h
E.
8h
F.
12h
【单选题】Despite not being terribly smart as individuals, wasp (黄蜂) colonies build and maintain a complex nest that lasts many generations. Just how these social wasps coordinate this task has always been a my...
A.
the wasps colonies are the ideal social colonies
B.
wasps have very strict hierarchical classes
C.
wasps’ behaviors depend on their, demands
D.
builder wasps have a higher status than pulp forager wasps