
【名词&注释】
晶体结构(crystal structure)、苔藓植物(bryophytes)、蕨类植物(pteridophyte)、大众文化(mass culture)、文化市场(cultural market)、喜闻乐见、裸子植物(gymnosperm)、明显提高(improved obviously)、塔克拉玛干(taklimakan)、可可西里自然保护区
[单选题]如果将陆生植物分为四大类,则下面( )不符合这个分类。
A. 苔藓植物
B. 蕨类植物
C. 裸子植物(gymnosperm)
D. 种子植物
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举一反三:
[单选题]DBatteries can power anything from small sensors to large systems. While scientists are finding ways to make them smaller but even more powerful, problems can arise when these batteries are much larger and heavier than the devices themselves. University of Missouri(MU) researchers are developing a nuclear energy source that is smaller, lighter and more efficient.
A. “To provide enough power, we need certain methods with high energy density(密度)”,said Jae Kwon, assistant professor of electrical and computer engineering at MU. “The radioisotope(放射性同位素) battery can provide power density that is much higher than chemical batteries.”
B. Kwon and his research team have been working on building a small nuclear battery, presently the size and thickness of a penny, intended to power various micro / nanoelectromechanreal systems (M/NEMS). Although nuclear batteries can cause concerns, Kwon said they are safe.
C. “People hear the word ‘nuclear’ and think of something very dangerous,” he said, “However, nuclear power sources have already been safely powering a variety of devices, such as pace-makers, space satellites and underwater systems.”
D. His new idea is not only in the battery’s size, but also in its semiconductor(半导体). Kwon’s battery uses a liquid semiconductor rather than a solid semiconductor.
E. “The key part of using a radioactive battery is that when you harvest the energy, part of the radiation energy can damage the lattice structure(晶体结构) of the solid semiconductor,” Kwon said, “By using a liquid semiconductor, we believe we can minimize that problem.”
F. Together with J. David Robertson, chemistry professor and associate director of the MU Research Reactor, Kwon is working to build and test the battery. In the future, they hope to increase the battery’s power, shrink its size and try with various other materials. Kwon said that battery could be thinner than the thickness of human hair.
G. 71. Which of the following is true of Jae Kwon?
H. He teaches chemistry at MU.
I. He developed a chemical battery.
J. He is working on a nuclear energy source.
K. He made a breakthrough in computer engineering.
[单选题]人在遇到危险的时候,会爆发出比平时更大的力量和产生更敏捷的反应,此时如测定其体内激素水平,明显提高(improved obviously)的是
A. 胰岛素
B. 肾上腺素
C. 性激素
D. 甲状腺素
[单选题]在植物的生活史中,配子体总是单倍体,孢子体总是二倍体。( )
A. 正确
B. 错误
[单选题]小明计划考察某地,地理老师建议他最好把时间安排在8月至10月,要带上墨镜、遮阳帽、防晒霜、羽绒服和防水服等物品。按照老师的建议,小明顺利地完成了考察活动。据此回答7-8题。7.小明考察的目的地是
A. 青海可可西里自然保护区 新疆塔克拉玛干(taklimakan)沙漠
四川大熊猫自然保护区 内蒙古大草原
[单选题]当前,文化市场在满足人民日益增长的文化需要的同时,也出现了“娱乐化”“低俗化”的倾向。针对这种现象,在文化消费时我们应当1提高辨别不同性质文化的眼力
A. 2选择个性新潮的文化价值方向
B. 3发展喜闻乐见的大众文化
C. 4提升自身的文化审美品位
D. ①②
E. ③④
F. ②③
G. ①④
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