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【简答题】
已知反比例函数 的图象经过点M（2，1）． （1）求该函数的表； （2）当 时，求 的取值范围．（直接写出结果）
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【简答题】D Film cameras and digital cameras work in a similar way. Film cameras After all, a film camera is basically a light – proof (不透光的) box. It has a lens (镜头) system to focus light onto the film at the b...
【简答题】Read the following passage and choose the best ONE that completes the blank. Whenever we could, Joan and I took refuge in the streets of Gibraltar. The Englishman's home is his castle because he has n...
【简答题】完形填空。 James was a curious young man. Everywhere he went, he liked to observe things and to 1 people-what they did, what they said and what they wore. Subconsciously, he was quick 2 all the time...
【简答题】在中国古代, 是当时世界上最进步的文字,今天的汉字就从它演变而来。
【简答题】写出由环己烷为原料,生产己二酸的过程(试剂自选,注明反应条件,分离纯化过程或操作方法等)
【单选题】About movie star,I like Jackie Chan most. 选出这句话的同义句。
A.
I like Jackie Chan very much.
B.
I really like Jackie Chan.
C.
My favourite movie star is Jackie Chan.
【单选题】If the demand for digital cameras increases when consumersʹ incomes rise, then digital cameras are
A.
a normal good.
B.
an inferior good.
C.
a substitute for film cameras.
D.
a complement to film cameras.
E.
made using advanced technology.
【简答题】Digital cameras usually store images in the format of______.
【单选题】We observe that the equilibrium price of digital cameras has fallen and the equilibrium quantity of digital cameras has increased. Which of the following events could be responsible for this?
A.
Technological advances in digital camera production.
B.
Consumers' preferences changed in favor of digital cameras.
C.
The price of film cameras rose.
D.
Workers who make digital cameras received a pay raise.
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