同仁堂,历久不衰,成为享誉世界的“中华老字号”。秘诀何在?

秘诀之一:做良心药。“炮制虽繁必不敢省人工,品味虽贵必不敢减物力”,童叟无欺,问心无愧,这就是同仁堂的质量观。

秘诀之二:做仁爱药。“但愿世间人无病,哪怕架上药生尘。”“以义为先,义利共生”,是同仁堂的价值观。只要利不要义的企业,一个个都倒下了,而同仁堂却屹立百年不倒,每年吸引3 000多万海外患者。

如何正确地骑自行车？

把下列词语补充完整。

争先____   悬崖____

    There are three people in Yang Yang's family. They like different kinds of food. Yang Yang likes rice a lot. But she doesn't like chicken at all. Her father is from Shanxi. He doesn't like rice at all. He likes chicken and bread very much. Her mother is from Dalian. She doesn't like rice or bread at all. But she likes fish and vegetables a lot. They love each other and help each other.

已知向量$\overrightarrow{a}$、$\overrightarrow{b}$满足$\overrightarrow{a}$=(1,0),$\overrightarrow{b}$=(2.4)，则|$\overrightarrow{a}$+$\overrightarrow{b}$|=____