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【单选题】
若x=1是一元二次方程x 2 -3x+m=3的一个根，则m的值为（ ）A.
5
B.
-1
C.
1
D.
-5
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反馈参考答案：
举一反三
【判断题】Twain’s style— based on vigorous, realistic, colloquial American speech—a new appreciation of their national voice.
A.
正确
B.
错误
【简答题】亚太经合组织的发展应反映各成员最广泛的共同利益。采取更富有成效的合作方式,缩小成员间的差距,增强凝聚力。
【单选题】Based on their style of construction, pagodas can roughly be classified into four categories: the _______ , multi-eaves, pavilion and Lamaist styles.
A.
two-story
B.
tower
C.
one-story
D.
square
【单选题】砌筑砂浆选用的水泥强度等级应根据砂浆品种及强度等级的要求进行选择。M15及以下强度等级的砌筑砂浆宜选用（ ）级的通用硅酸盐水泥或砌筑水泥。
A.
10
B.
32.5
C.
42.5
D.
55
【单选题】“Cats use a causal-logical understanding of noise or sounds to predict the appearance of invisible objects,” lead researcher Saho Tagaki says in a press release. The researchers conclude that cats’ hu...
A.
They depend on their instincts.
B.
They rely mainly on their hearing.
C.
They wait some time before attack.
D.
They use both their ears and eyes.
【简答题】"Cats use a causal-logical understanding of noise or sounds to predict the appearance of invisibleobjects," lead researcher Saho Takagi says in a press release. The researchers conclude that cats' hun...
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