安全库存是由年需要量决定的。

A. spread

B. variety

C. reduce

D. necessary

E. popular

    Do you love to start your day with a cup of tea in the morning? Maybe you enjoy taking a quiet moment out in the evening to relax with it?
Tea has been an important part of daily life in China for hundreds of years. There is a ________小题1:_______ of tea, such as green tea, black tea, flower tea, and yellow tea. But two rising stars in China’s teacups --- white tea and dark tea --- are becoming more and more ________小题2:_______.
Dark tea is made from rough, old tea leaves which darken to a deep brown colour during the long process.
White tea, produced mostly in Fujian, is made by drying tea leaves. The local people ________小题3:_______ the fresh leaves out on the ground and keep them in jars after they have dried.
Both dark tea and white tea have a long history in China. Dark tea and white tea are healthy drinks. Dark tea can ________小题4:_______ fat n the body, lower blood pressure and slow the aging process.