【名词&注释】
宏观调控(macro-control)、晶体结构(crystal structure)、被子植物(angiosperm)、财政支出(fiscal expenditure)、财政赤字(financial deficit)、财政收入(financial revenue)、主要任务(major task)、裸子植物(gymnosperm)、政府工作(government work)、顶端优势(apical dominance)
[填空题]2009年我国政府工作(government work)主要任务(major task)之一是加强和改善宏观调控，保持经济平稳较快发展。全国财政赤字预计达9500亿元。这表明本年度我国
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举一反三：
[单选题]与植物顶端优势(apical dominance)有关的植物激素是
A. 生长素
B. 赤霉素
C. 脱落酸
D. 乙烯
[单选题]It was from only a few supplies that she had bought in the village the hostess cooked such a nice dinner.
A. where
B. that
C. when
D. which
[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]唇形科的雄蕊是( )。
A. 二强雄蕊
B. 二体雄蕊
C. 四强雄蕊
D. 单体雄蕊
[单选题]被子植物和裸子植物(gymnosperm)有机物的运输都是由筛管完成的。( )
A. 正确
B. 错误
[单选题]
A. If
B. Since
C. Though
D. When
[单选题]What happened to George and Richard in the end?
A. Both George and Richard became millionaires.
B. Both of them realized their original ambitions.
C. George established a successful business while Richard was missing.
D. Richard became a millionaire while George had no great success.
[单选题]Can you surprised by the ending of the film?--------NO,I____the book, so I already knew the story
A. was reading
B. had read
C. am reading
D. have read
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