Recently, Chongqing Three Gorges University has held an activity named “Cell Phone Ninja”(手 機(jī)忍者). They would like their students not to use cell phones for 21 days. It is really a challenge( 挑 戰(zhàn))for most students.

The activity started on April 12. Each student who volunteered to take part in this activity got a bracelet(手環(huán)). If the students did not use their cell phones, there would be a photo on the screen of the

bracelet to show that. If they used their cell phones, a different photo would appear on the screen of the bracelet. After the last class of each day, the students sent the photos to the school’s public Wechat.

More than 800 students wished to take part in this test, and 400 were chosen. After seven days, only 103 students remained. The test was set for 21 days because some scientists believe that 21 days is long enough to help people form a habit.

According to the teachers in the university, the activity was not a competition. It depended on students themselves to make the decision. The teachers hoped their students could form better study habits through activities like this one.

1.When did the activity “Cell Phone Ninja” start?

2.How many students were chosen to take part in this test?

3.What is 21 days long enough for?

4.Who made the decision in the activity?

5.Where did the students send the photos ?

1.On April 12. 2.400 students 3.To help people form a habit. 4.Students themselves 5.To the school’s public Wechat. 【解析】這是一篇說明文，主要介紹近日重慶三峽學(xué)院舉行了一個(gè)叫"手機(jī)忍者"活動(dòng)。他們希望他們的學(xué)生不要使用手機(jī)21天。對(duì)于大多數(shù)學(xué)生來說這真...
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