Even though Jack has failed many times in his experiment，he holds a belief________he will succeed on

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• Even though Jack has failed many times in his experiment, he holds a belief________he will succeedon
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• With the development of science and technology,there is no doubt________Chinese astronauts will land
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• His suggestion _____ to see the art exhibition interested every one of us.[ ]A. that we go B. which
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• 由方程组，可以得到x+y+z的值等于[]A．8B．9C．10D．11-八年级数学
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• Do you have any idea _____on earth has happened to ourfriend? [ ]A. that B. what C. asD. which-高一英语
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• 已知x，y，z满足（1）求170x+170y﹣28的值；（2）当x，y，z为何值时，有最大值？并求出此时的最大值。-八年级数学
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• 解方程组-七年级数学
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