Then, it points out the whole procedure and the design of questions in the pretest and posttest.
随后详细描述了整个实验过程及前后测实验题目的设计。
Confidential testing for antibody to HIV should be offered to anyone requesting it, but only in conjunction with pretest and posttest counseling.
应向每一个请求者提供保密的HIV抗体检测，并与检测前后的咨询服务相结合。
Confidential testing for antibody to HIV should be offered to anyone requesting it, but only in conjunction with pretest and posttest counseling.
应向每一个请求者提供保密的HIV抗体检测，并与检测前后的咨询服务相结合。
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