——How old is your daughter?—— ______ . We had a special party for her _____ birthday last week.
A:Ninth; ninth
B:Nine ; nineth
C:Ninth; nine
D:Nine; ninth
a试管、b漏斗、c酒精灯、d集气瓶、e广口瓶、f胶头滴管、g量筒(10mL,50mL,100mL)、h药匙、i石棉网、j试管刷 等仪器,请为下列实验操作各选一种.(用序号填空)
夏天从冰箱里拿出一瓶饮料,放在空气中,外壁会潮湿,这说明空气中含有()