1. The study followed four groups of children:
    这一研究跟踪研究了四组儿童：

2. These children showed a reasonable level of happiness and were very alert during periods of study.
    这些孩子显示了相当不错的快乐感，在学习过程中反应也很敏捷。

3. These children did work long hours, but their alertness and happiness during study time was far below that of children in more balanced family environments.
    这些孩子确实能长时间努力，但他们在学习过程中的敏捷程度和快乐感大大低于生活在能兼顾激励和支持的家庭环境中的孩子。

4. The brains of children in the study were scanned while being presented with a simple visual puzzle.
    研究中，给孩子们看一道简单的视觉难题，同时对其脑部进行扫描。

5. The importance of good people skills was demonstrated by Robert Kelley of Carnegie-Mellon University and Janet Caplan in a study at Bell Labs.
    卡内基-梅隆大学的罗伯特·凯利和珍妮特·卡普兰在贝尔实验室的一个研究说明了良好的交往能力的重要性。

6. Now a new study by a team of Purdue University researchers suggests that even moderate exercise may lead to reduced iron in the blood of women.
    由珀杜大学一组研究人员进行的一项新的研究表明：即使是适度的锻炼，也可能会降低女性血液中铁离子的含量。

7. How many hours a day does she study English?
    她一天读几小时英文?

8. He persevere in his study until he succeeded.
    他孜孜不倦直到成功。

9. He found it important to study the situation in Russia.
    他觉得研究俄国的形势很重要。

10. Have you decided to study in the seminary?
    你决定念神学院吗?