____ is most prevalent during the fall and winter, which forms overnight as the air near the ground cools and stabilizes to reach saturation. A. Radiation fog B. Advection fog C. Frontal fbg D. Steam fog

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My trip to Beijing is one of the most memorable（____）of my life.

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The ____ is the most accurate position-fixing equipment.A. SART B. HiFix C. DGPS D. EPIRB

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Most economic data,____regarding hiring is positive.

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Thank you for your recent order. Although most of your items have ____ shipped, the Full-Spectrum Desk Lamp （model B07） is temporarily out of stock.

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