根据课本P18 的课文内容，回答下列问题。

1. How many groups did they give talks?

   _______________________________

2. What project did they talk about?

    ______________________________

3. What was the weather like that day?

    ______________________________

4. When did they give the talk?

    ______________________________

5. Who showed some physics?

    ______________________________

诚实守信是现代人必备的品质，诚信品质需要从小培养，重在行动。做一个诚实的人，要做到                                    

①重诺守信             ②对事负责

③从点滴小事做起       ④任何时候都要说实话

A．①②③

B．②③④

C．①②③④

D．①②