—Little Tom is used to getting up ______eight every morning.A at B on C in D of

—Little Tom is used to getting up ______eight every morning.A at B on C in D of

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六价铬与二苯碳酰二肼反应时,显色酸度一般控制在0.05~0.3mol/L(1/2H2SO4)。显色酸度高时,显色快,但色泽不稳定。A.正确B

六价铬与二苯碳酰二肼反应时,显色酸度一般控制在0.05~0.3mol/L(1/2H2SO4)。显色酸度高时,显色快,但色泽不稳定。A.正确B.错误

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—John and Alice got ______ last year in Las Vegas.A marrying B marriage C marrie

—John and Alice got ______ last year in Las Vegas.A marrying B marriage C marrie

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—The garden ______while the Greens were away from home.A took good care of B was

—The garden ______while the Greens were away from home.A took good care of B was

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