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【单选题】
We spoke to three students from around the world about different national holidays. There are different customs for each festival. Tan Xiaodong, 15, Hong Kong, China “It’ll be Chinese New Year soon. Before it we’ll clean the house and decorate it for good luck. Every shop is going to close for a few days and we’ll go out a lot to celebrate in the streets. We might go and see the lion and dragon dances in the city center. I love this festival.” Cindy, 16, Sydney, Australia “Australia Day is on 26 th January and it’s an important holiday here. We always have a Monday off, so we celebrate for three days. My parents and I go to the countryside for a picnic and friends always come over. Many people go to beach parties or street parties and there’s lots of music and dancing. What fun!” Jimmy, 14, New York, the USA “The first Thanksgiving Day was hundreds of years ago when Europeans who came to America thanked God for his help. It’s still a very important' day for families to be together. This year we are going to visit my parents and we’ll eat a delicious meal of turkey. Thanksgiving Day is on the fourth Thursday in November every year.” 4. Thanksgiving Day is on _________.
A.
December 25
B.
October 1
C.
the fourth Thursday in November
D.
the fourth Thursday in December
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A.
地崩山 摧 壮士死
B.
雄飞雌 从 绕林间
C.
砯崖 转 石万壑雷
D.
天姥连天向天横,势拔五岳 掩 赤城
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A.
圆周处最大
B.
圆周处最小
C.
切应力沿着半径方向作用
D.
圆心处最大
【单选题】有关对受扭圆轴横截面上切应力的分布规律的描述中,正确的是______。
A.
圆周处最大
B.
圆心处最大
C.
圆周处最小
D.
切应力沿着半径方向作用
【单选题】有关对受扭圆轴横截面上切应力的分布规律的描述中,正确的是______
A.
圆心处最大‍ ‍
B.
圆周处最大
C.
圆周处最小
D.
切应力沿着半径方向作用
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A.
色血栓
B.
透明血栓
C.
混合血栓
D.
白色血栓
E.
淋巴管性血栓
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A.
64
B.
128
C.
256
D.
512
【单选题】国家对于危险化学品的生产、储存实行( )制度。
A.
审查
B.
备案
C.
核准
D.
审批
【单选题】由血小板、纤维蛋白和少量白细胞组成,通常构成血栓头部的是
A.
红色血栓
B.
透明血栓
C.
混合血栓
D.
白色血栓
E.
淋巴管性血栓
【单选题】有关对受扭圆轴横截面上切应力的分布规律的描述中,正确的是______
A.
切应力沿着半径方向作用
B.
圆周处最大
C.
圆心处最大
D.
圆周处最小
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