Have you ever recorded information about your everyday activities by means of a smartphone？Perhaps you've tracked（追蹤）how many kilometers you've run，how many hours you've slept or how many calories you've burned in a day.
   If so，you've taken part in a movement called the "Quantified Self Movement"，also called self-tracking.The idea is to take information about your everyday activities and analyze them to help form a healthier lifestyle.
   Tracking daily activities isn't a new idea.In past years，athletes and their coaches kept notes detailing nutrition，training and sleep patterns in order to achieve an athletic goal.Similarly，doctors have also helped patients to record parts of their lifestyles and eating habits to help fight allergies（過敏），headaches and other health problems.However，it wasn't until 2007 that magazine editors Gary Wolf and Kim Kelly，invented the term "Quantified Self".Wolf says that self-tracking will change our sense of self with the purpose of making us more effective in the world.
   Self-tracking is becoming a lot more popular these days，as it becomes easier for people to use modern technology tools to track what they're doing and share it with others.Recently，tools such as smartphones，along with newly published wearable things can help record personal data including sleeping hours，stress levels，mood and soon.With these tools，self-tracking can help us recall our behavior with greater accuracy（精確）.
   Although people benefit a lot from self-tracking，Dennis Nash，president of Data Speaks Health Solutions，says self-tracking has its drawbacks.Once people start tracking their daily activities，it can become an addition people like to do often.Also，they might begin to worry too much about their health.
   While self-tracking doesn't guarantee（保證）that one's quality of life will improve，it can stress the importance of eating well and exercising daily.After all，the Quantified Self Movement's focus is motivating（激勵）people to apply enough energy to make healthier choices.
（1）According to the passage，Gary Wolf thinks self-tracking can

D

D

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A.change our personal data
B.improve living conditions
C.help people make choices
D.lead to self-improvements
（2）The third paragraph is mainly about

D

D

.
A.what self-tracking is
B.why self-tracking is popular
C.who started self-tracking
D.how self-tracking has developed
（3）The word "drawbacks" in Paragraph 5 probably means

A

A

.
A.disadvantages
B.experiments
C.challenges
D.differences
（4）The writer probably agrees that

A

A

.
A.self-tracking can increase people's self-sense towards a healthier life
B.people need as many tools as possible to track their daily activities
C.people can achieve a better standard of life from self-tracking
D.too much self-tracking may bring people health problems