题目内容：

What Is Self-tracking All about

Perhaps you’ve tracked（观测） how many kilometers you’ve run, how many hours you’ve slept or how much you’ve eaten in a day.

If so, you’ve taken part in a popular movement called the “Quantified Self Movement” or “Self-tracking”. Maybe you’ve wanted to change a bad habit but couldn’t. Self-tracking may be your answer. The idea is to collect information about your everyday activities and analyze（分析） them to help improve and form a healthier lifestyle.

Recently, tools such as smartphones, apps, along with newly published wearable things, are making self-tracking easy. Today, one can use Fitbit, the Jawbone Up, Google Glass or a smart watch to record personal data(数据) including sleeping hours, stress levels, heart rate and mood.

So why does a person self-track? Someone may be trying to lose weight or improve their sleep. Another person feels tired after eating. Self-tracking could help him to know what foods make him sleepy and watch his diet.

Tracking daily activities isn’t a new concept. In years past, athletes and their coaches kept notes food, training and sleep 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 health problems. However, it wasn’t until 2007 that magazine writers Gary Wolf and Kim Kelly created the term (术语) “Quantified Self” or  “self-tracking”.

Although self-tracking has many advantages, Dennis Nash, president of Data Speaks Health Solutions, says self-tracking has its disadvantages. Once people start tracking their daily activities, it can become an extra task people like to do often. Also, they might begin to worry too much about their health.

Though self-tracking doesn’t make sure that one’s quality of life will improve, it can encourage people to make healthier choices.

1.People choose self-tracking because _______.

A. it watches your eating habits

B. it increases your movement

C. it records how many kilometers you run every day

D. it collects personal data and leads to self- improvement

2.The writer mentions tools such as smartphones and apps in Paragraph 3 to show _______.

A. we depend too much on them

B. it is easier to do self-tracking

C. they do harm to people’s health

D. tools are necessary to do self-tracking

3.Self-tracking was firstly come up with by _______.

A. two magazine writers

B. athletes and their coaches

C. doctors and their patients

D. scientists of Data Speaks Health Solutions

4.You can find this article in the part of _______.

A. Education       B. Sports     C. Health     D. News