Peoplewhodonotsleepenoughtendtobecomeirritable.
A、easilyannoyedCream of tartar 酒石 , a weak acid, can be added to egg whites to help them foam泡沫 when they are beaten
The Salk vaccine is a major factor in the fight to eradicate polio.
ThecompanyissuesanannualreporteveryMarch.
People who do not sleep enough tend to become irritable .
Comets are still regarded with awe by some people.
