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【判断题】
抗原一般具备的两种特性是:免疫原性和免疫反应性。( )A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】咨询师制订方案时的切入点可以是热点、痛点、难点、敏感点和关键点。其中，关键点指的是
A.
企业阶段性的中心工作
B.
对企业负面影响大、刺激性强的点
C.
久拖不决，或久治不愈的问题
D.
对于绩效影响处于系统瓶颈位置或薄弱环节上的问题
【单选题】The underlined word 'it' ( line 3, para. 6 ) refers to______.
A.
the city government
B.
the city committee for the arts
C.
Sutton Theatre Company
D.
Performing Arts Society
【单选题】The unemployment rate in this city ____ from 7％ to 6％ in the past two years.
A.
has fallen
B.
had fallen
C.
is falling
D.
was falling
【单选题】The city ________ 6 billion yuan to preserve the character of the old town, mainly to divert water from the Taihu Lake and the Yangtze River to supply the waterway systems of the old town.
A.
invested
B.
proved
C.
invaded
D.
invented
【简答题】按照发票用途的不同，可分为（ ）。
【单选题】The underlined word“it”(1ine 3，para．6)refers to＿＿＿．
A.
the city government
B.
the city committee for the arts
C.
Sutton Theatre Company
D.
Performing Arts Society
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