单项选择题

A bottle weighs more after air is put in. proves that air has weight.

A. We
B. Which
C. It
D. What
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______ still young, Mr. George has had amazing achievement in cosmology.
A. When
B. As
C. Although
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The report showed us clearly how the car got ______ and crashed at last.
A. into control
B. under control
C. within control
D. out of control
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