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听力原文: Bush was born on July 6, 1946, in New Haven, Connecticut, the first child of the family. His grandfather, Prescott Bush, was a Wall Street financier who was elected to the Senate of the United States from Connecticut in 1952. Although his father began his career in the oil industry, he eventually served as a congressman. At the age of two, Bush moved with his parents from Connecticut to Odessa, Texas, where his father embarked on a career in the petroleum business. After a year in Texas, the family moved to California for business reasons. A year later, the family moved back to Texas and settled in Midland, a town in western Texas legated about 500 km (300 mi) from Fort Worth. Bush lived in Midland from 1950 to 1959. He had three brothers Jeb, Neil, and Marvin, and a sister, Dorothy. In 1959, again for business reasons, the family moved to Houston, Texas. In 1961 Bush left Texas and went to Andover, Massachusetts, to attend Phillips Academy, a boarding school that his father had also attended. At Phillips, Bush played basketball, baseball, and football. He was best known for being heed cheerleader. In 1964 he enrolled at Yale University in Connecticut his father and grandfather had also attended Yale. That same year, Bush campaigned for his father in his unsuccessful bid to win a U.S. Senate seat from Texas. At Yale, Bush was considered an average student, but he was popular with his classmates. During Bush's time at Yale, college students all over the country began to hold protests about a variety of issues, including protests against U.S. involvement in rite Vietnam War (1959-1975). Bush was uncomfortable with the growth of the student protest movement, and he generally refrained from participating in campus polities. In 1968 he campaigned on behalf of his father, who was running for reelection for a seat in the House of Representatives that he had won in 1966. (33)
A.
He was a Wall Street financier.
B.
He was a congressman.
C.
He did petroleum business.
D.
He began his career in the oil industry.
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【多选题】在模型综合特性曲线图中,不同型式水轮机的等开度线特点不同,下列说法正确的是()
A.
冲击式水轮机等开度线平行于n11纵轴,即开度不变时机组的过流量与转速无关
B.
低比转速混流式水轮机等开度线左倾,即开度不变时机组过流量随着转速的升高而减小;
C.
高比转速混流式水轮机等开度线右倾,即开度不变时机组过流量随着转速的升高而减小;
D.
轴流定桨式为高比速,等开度线右倾
【单选题】对于等高线特性,下列哪个说法是不正确的( )。
A.
同一条等高线上的点高程相等
B.
等高线是闭合曲线
C.
除悬崖外,不同高程的等高线不可相交
D.
高程相同的点在同一等高线上
【判断题】假设a$="abcdef",则函数Left(a,4)的返回值为:"abcd".
A.
正确
B.
错误
【多选题】对于等高线特性,下列说法正确的是( )。
A.
同一条等高线上的点高程相等
B.
等高线是闭合曲线
C.
除悬崖外,不同高程的等高线不可相交
D.
高程相同的点在同一等高线上
E.
等高线有时候不闭合
【多选题】对于等高线特性,下列哪些说法是正确的( )。
A.
同一条等高线上的点高程相等
B.
等高线是闭合曲线
C.
除悬崖外,不同高程的等高线不可相交
D.
等高线与山脊、山谷线正交
【简答题】在酸性溶液中, H 2 O 2 能与重铬酸盐作用生成蓝色的 CrO 5 ,离子方程式为:  4H 2 O 2 + 2H + + Cr 2 O 7 2- = 2CrO 5 + 5H 2 O  根据下图所示 Cr 2 O 7 2- 和 CrO 5 的结构判断, 上述反应 (填 “ 是 ” 或 “ 不是 ” )氧化还原反应。
【单选题】某山区居民常年以玉米为主 ,此地区居民易发生 :
A.
脚气病
B.
脂溢性皮炎
C.
癞皮病
D.
白内障
E.
佝偻病
【多选题】等高线的特性,下列说法正确的是 ( )。
A.
同一条等高线上高程相等
B.
等高线是闭合曲线
C.
等高线只有在陡崖或悬崖处才会重合或相交。
D.
山脊线与山谷线应和改变方向处的等高线的切线垂直相交。
E.
同一幅地形图内的基本等高距可以不同
【简答题】在酸性溶液中, H 2 O 2 能与重铬酸盐作用生成蓝色的 CrO 5 ,离子方程式为: 4H 2 O 2 + 2H + + Cr 2 O 7 2- = 2CrO 5 + 5H 2 O 。 根据下图所示 Cr 2 O 7 2- 和 CrO 5 的结构判断,上述反应 (填 “ 是 ” 或 “ 不是 ” )氧化还原反应。
【单选题】某有机物X的结构简式如下图所示,下列有关说法中正确的是 ( ) A.X的分子式为C12H16O3 B.X在一定条件下能发生加成、缩聚、取代、消去等反应 C.在加热Ni作催化剂的条件下,1 mol X最多能与4 mol H2加成 D.可用酸性重铬酸钾溶液区别甲苯和有机物X
A.
选择1
B.
选择2
C.
选择3
D.
选择4
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