研究者目前提出的问题是人们在这类测试中的表现是否基于不同的大脑结构，如果答案是肯定的，那么脑部扫描能否职业选择有帮助呢？
Researchers are now asking whether performance on such tests is based on differences in brain structure, and if so, can brain scans be helpful in choosing a career?
但是惩罚性的收费凑效的前提是，驾驶者有体面的公共交通系统可以选择，而通常这种选择是没有的。
But punitive charges will work only if the displaced drivers can switch to a decent public transport system. Often they cannot.
选择有代表性的监测点，是决定监测数据能否对该区域的状况进行描述的前提。
To select representative monitoring points is a prerequisite for deciding whether monitoring data illustrate the said area situation.
以丙烷为例，在比容固定的前提下，不同的抽提温度有不同的分离途径可供选择。
Taking propane for example, on the base of given specific volume, there are various separations for different extraction temperatures.
Grifo说他不反对胚胎筛检用于选择有基因缺陷的宝宝，前提是父母已被告知利弊、风险、收益。
Grifo said he wouldn't oppose embryo screening to select a baby with a genetic defect if the parents have been informed of the pros and cons, risks and benefits.
Grifo说他不反对胚胎筛检用于选择有基因缺陷的宝宝，前提是父母已被告知利弊、风险、收益。
Grifo said he wouldn't oppose embryo screening to select a baby with a genetic defect if the parents have been informed of the pros and cons, risks and benefits.
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