1. What was his reaction to the news?
    他对这消息的反应如何?

2. The poor record of survival, plus public reaction against the media´s use of heart transplants for publicity (and perhaps also entertainment), gave rise to a wave of anti-transplant feelings both in and outside the medical profession.
    由于手术后病人存活时间短，加之公共舆论反对新闻界利用心脏移植来进行宣传（甚至娱乐），所以，医学界内外掀起了一股反对心脏移植的浪潮。

3. This boost in reaction time after exercise training may occur because declines associated with getting old could actually stem from declines in physical condition.
    接受运动训练之后，人的反应速度会加快，这可能是因为与衰老有关的机能衰退实际上根源于体质下降。

4. That's an understandable reaction.
    这种反应是可以理解的。

5. There was a sudden drop in activity in the left side of the brain — the side most involved in language — and an exaggerated reaction on the right, the side strongest at thinking about the location of objects.
    他们的左半脑 -- 与语言能力相关的那一半 -- 的活动急剧下降，而右半脑，擅长思考物体方位的那一半，却做出强烈的反应。

6. Notice a person's reaction to stress in these situations and to aggressive behavior in others.
    请注意一个人在这类情况下遇到压力时的反应，以及他/她在其他情况下遇到挑衅性行为时的反应。

7. His initial reaction was one of shock.
    他最初的反应是震惊。

8. If parents were prepared for this adolescent reaction, and realized that it was a sign that the child was growing up and developing valuable powers of observation and independent judgment,
    如果家长对青少年的这种反应有思想准备，并且意识到这象征着孩子们正在成熟和正在发展宝贵的观察力、独立判断力，

9. Frequently the reaction it causes is only a skin rash or a light fever.
    通常只是皮疹、低烧。