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【多选题】
需求具有( )等特征。A.
无限性
B.
多样性
C.
社会性
D.
潜在性
E.
多变性
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举一反三
【单选题】John’s pale face suggested that he ______ill, and his parents suggested that he ______a medical examination.
A.
be, should have
B.
was, have
C.
should be, had
D.
was, has
【单选题】急性糜烂性胃炎的主要临床表现是
A.
上消化道出血
B.
上腹部疼痛、烧灼感
C.
恶心、呕吐
D.
上腹饱胀、食欲不振、暖气等
E.
上腹部隐痛 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
【单选题】Jane’s pale face suggested that she ____ ill，and her parents suggested that she ____ a medical examination.
A.
be；should have
B.
was；have
C.
should be；had
D.
was；has
【简答题】双命名法规定，每个物种的科学名称由两部分组成，第一部分是______，第二部分是______．
【单选题】The boy suggested that Tom ______ the problem another way, and Tom’s expression suggested that he_________.
A.
should solve; agreed
B.
solve; agree
C.
solved; should agree
D.
solved; agreed
【单选题】Jane’s pale face suggested that she _______ill, and her parents suggested that she ________medical examination.
A.
be; should have
B.
was; have
C.
should be; have
D.
was; has
【简答题】简述何为市场绩效？
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