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含有J链和 SP 且在粘膜表面发挥抗感染作用的 Ig 是________。
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【简答题】During the 20th century, ______ , abundant conflicts in use demand, and an intensification of use that has accelerated quickly.
【简答题】常用的人为机械特性曲线是 和 。
【简答题】A decrease in ______ during the 20th century led to a bigger investment in leisure.
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【单选题】The legacy of cubism was not exhausted in the first quarter of the 20th century.
A.
The cubist legacy did not become exhausted in the beginning of the 20th century.
B.
Cubism's legacy continued beyond the first quarter of the 20th century.
C.
The cubist movement continued to influence art beyond the early years of the 20th century.
D.
The cubist movement was influenced by many other art movements in the early years of the 20th century.
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