A:向内缓缓推活塞时可见长颈漏斗下端有气泡
B:向外缓缓拉活塞时可见长颈漏斗下端有气泡
C:M是水,从长颈漏斗口添加浓硫酸后观察到P左移
D:M是浓NaOH溶液,注射器中充满CO2,观察到P右移
Mary ____ (have) a new computer.
新疆的哈蜜瓜特别甜,而同一品种在北京采用大棚种植则甜度下降,这是因为大棚种植( )
The upset mother thought to herself, “If only I ______ what's going on in my little boy's head right now.”