His breathing was [steady].

[单选题]His [breathing]was steady.A.regularB.usualC.commonD.ordinary

[问答题] 简述稳态(steady-state)的概念

[名词解释] 稳态血药浓度（steady – state plasma-concentration，Css）

[单选题]The last half of the nineteenth century( )the steady improvement in the mea

[单选题]The last half of the nineteenth century( )the steady improvement in the mea

[单选题]His constant_____with his peers has left its mark on his growth.A.consentB.

[单选题]A．ccording to his plan, his plane should have taken off at _______.A． 6:30 B. 7:00 C. 7:30 D.:8:00

[单选题]H．is efforts to raise money for his program were because no one showed any intention to take a cent out of their pockets.A． in place B. in sight C. in effect D. in vain

[单选题]H．isremarksleftme_______abouthisrealpurpose.A)wonderedB)wonderC)towonderD)wondering

[单选题]His father is _______ than his mother.A.older two yearsB.two years olderC.e