他们相信，IQ 测试是评估孩子是否适合特殊教育课程的有效方法，这是正确的。
They believed, correctly, that IQ tests are a valid method of evaluating children for special education classes.
从近处看，每一个小点的决定都似乎影响甚微；但是从远处看，你能够得到一条最有效的路径。最终，我们能够发现沿途中的每个转弯都是正确的。
Up close, it seems a little all over the place, but from farther away, the true path shows and in the end it justifies all the turns along the way.
手术方法的改进是正确，有效地矫正鼻咽癌的方法。
The improvement of the operative method is reasonable and effective in correcting pectus carinatum.
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