【C13】A．healthyB．junkC．ordinaryD．organic

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

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

【C13】A．therebyB．maybeC．thanD．otherwise

【C3】A．minorB．secondaryC．ordinaryD．inferior

【C13】A．opportunitiesB．positionsC．companiesD．organizations

【C10】A．effectiveB．sensitiveC．ordinaryD．careful