reaction是什么意思？

There’s one sound that  gets a big reaction from kids on  a hot day: the sound of an ice-cream  truck.

But the message that everyone must screen for cancer has become so deep-rooted that when health care experts recommended that women under 50 and over 74 stop screening for breast cancer, it caused a riotous reaction among doctors, patients and advocacy groups.

The reaction to his death, with people leaving candles and flowers outside Apple stores and politicians singing praises on the internet, is proof that Mr Jobs had become something much more significant than just a clever money-maker

Hmm, I've been a bit worried about his reaction.

There's one sound that gets a big reaction from kids on a hot day: the sound of an ice-cream truck.

This is the process whereby helpers provide reassurance to clients that what they are experiencing is not abnormal or atypical（非典型的）, but is a normal reaction shared by others when facing such circumstances.

Furthermore, by gauging the reactions to our self-disclosures we learn what types are acceptable or unacceptable with particular people and in specific situations.

Your gut reaction (本能反应) and dismissive rejection, even of a worthless idea, might not qualify as systematic or fair.

Ask your pharmacist whether he can suggest a drug that will relieve the symptoms but that will not cause the adverse reaction.

If an adverse reaction to a drug is serious, consult your doctor for advice at once.

Once one person looks at their phone, other people feel compelled to do the same, starting a chain reaction.

Whenever you have an adverse reaction, you should stop taking the drug right away.