读古诗《黄鹤楼送孟浩然之广陵》,故人西辞黄鹤楼,为什么叫“西辞?
孟浩然是由西向东而行。
某城市兔唇畸形新生儿出生率明显高于其他城市,研究这种现象是否由遗传因素引起的方法不包括
-- I heard that there are a few seats left for tonight's show.
-- Really? I was under the impression ______ they were sold out a long time ago.
0.702˙ ____ 0.7˙02˙
下列实验操作正确的是( )