【C13】A．mistakeB．instructionC．lessonD．significance

【C13】A．organizationalB．organizationC．organizingD．organized

【C13】A．ImmunityB．AddictionC．ExposureD．Reaction

The word （) means "the act or process of distributing".A、mistakeB、distributio

______ reflects gaps in a learners language knowledge.A．MistakeB．ErrorC．OverusingD．Overgen

关于食管下段括约肌（LES)的结构与功能，下面哪些说法是不正确的A．正常人LES长3～4 C111B．LES的作用

The traffic police were searching for evidence to prove the man’s ______.A、mistakeB、fa