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【单选题】
关于细胞因子下述错误的是A.
细胞因子受体可以是18超家族成员
B.
可由非免疫细胞合成
C.
对机体有可能有害
D.
相互之间可产生拮抗作用
E.
只表达在细胞膜表面起作用
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【单选题】One of the tourists ______ from the tour group. That was why the tour guide lost his temper.
A.
kept away
B.
broke away
C.
took away
D.
gave away
【简答题】2013年,温州鞋革行业协会成立20周年之际,温州鞋企提出做好“三双鞋”,即“文化鞋”、“科技鞋”、“责任鞋”的理念。 1.文化鞋 温州制鞋历史并不短,有2000多年的历史,由过去的家庭作坊、前店后作坊,发展为现代化制鞋企业,制鞋工序也由原来的四五道,发展为现有的280多道工序。制鞋成为温州历史文化的一部分。于是,温州鞋业企业家提出“做鞋就要做文化”的理念。如今温州有不少鞋企一掷几百万或上千万元,...
【单选题】Application for a group tour of the White House must be submitted ______.
A.
exactly on the date of application
B.
at least 30 clays in advance
C.
any day between Tuesday and Saturday
D.
10 days before the date of the tour
【简答题】Application for a group tour of the White House must be submitted ________. A) exactly on the date of application B) at least 30 days in advance C) any day between Tuesday and Saturday D) 10 days befo...
【单选题】Tomorrow the mayor is to __________ a group of Canadian businessmen on a tour of the city．
A.
coordinate
B.
cooperate
C.
accompany
D.
associate
【单选题】The tour guide gave members of the group a chance to explore the ancient castle on ______.
A.
theirs
B.
them
C.
themselves
D.
their own
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