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【单选题】
在 1909 年,第一个人工合成的大分子化合物是:A.
、酚醛树脂
B.
、人造橡胶
C.
、人造纤维
D.
、聚酰胺
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反馈参考答案：
举一反三
【简答题】混凝土的特点如何？
【单选题】He has never been to the battle field and his account of the military situation is by no means reliable.
A.
他从未上过战场，他谈军事形势，根本靠不住。
B.
他从未上过战场，他对军事形势的谈论是根本靠不住的。
【简答题】choose the right words for each sentence from the words given. relived distort neglects subtle persistent by no means outrageous greedy mockery highlight 5. He is always bus...
【单选题】There is no doubt _____ he means to help, but in fact he just gets in the way.
A.
that
B.
whether
C.
what
D.
if
【简答题】素混凝土梁和钢筋混凝土梁的破坏特点如何 ?
【简答题】When the said, “The superior man is no vessel,” he means a junzi should not just be ( ).
【单选题】"Evil," stated Hitchcock once in an interview, "is complete disorder." That his villains were overcome in the end is the price he had to pay to Hollywood's moral code. His happy endings are often inje...
A.
admiring
B.
objective
C.
subjective
D.
impartial
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