（1）What will happen in the future according to Kate？
A.There will be less fresh water.
B.There will be less rubbish.
C.There will be more space trips.
（2）How does Kate advise people to protect the environment？
A.By writing articles online.
B.By giving classes online.
C.By sending emails.
（3）How do people travel in space according to Sally？
A.By plane.
B.By balloon.
C.By spaceship.
（4）What does Sally think of the future life？
A.It's interesting.
B.It's exciting.
C.It's relaxing.
（5）Where does Jane think students will have classes？
A.On the Internet.
B.At school.
C.On the phone.