5G has faster data transmission, lower delay and stronger mobility ______ the conventional 4G.
A.in charge of B.in contrast to C.in defense of D.in proportion to
听下面一段独白，回答以下小题。
1.What is the speaker mainly talking about?
A.How to predict an earthquake.
B.How to survive an earthquake.
C.How to rescue people in an earthquake.
2.What do people need to get ready for an earthquake?
A.Shelters. B.Cars. C.Blankets.
3.What does the speaker advise people to do when an earthquake hits?
A.Drop to the ground. B.Stay by the window. C.Run towards the door.
4.What does the speaker warn people of at the end of the talk?
A.Trapped lifts. B.Falling pieces. C.Damaged bridges.
听下面一段较长对话，回答以下小题。
1.Where is the treehouse?
A.In Justin’s yard. B.In Stanley’s yard. C.In Miss Johnson’s yard.
2.How will Justin get back to the treehouse?
A.By car. B.By bike. C.On foot.
3.Why is Justin in a hurry?
A.He is afraid of thunder.
B.He thinks it’s going to rain.
C.He wants Mom to see the treehouse.
听下面一段较长对话，回答以下小题。
1.What is the probable relationship between the speakers?
A.Schoolmates. B.Brother and sister. C.Teacher and student.
2.What just happened to Chad’s shirt?
A.He got a tea stain on it.
B.He got blue paint on it.
C.He rolled in the grass with it.
3.What will Chad do after school?
A.Tell his mother what happened.
B.Ask Betty to explain for him.
C.Buy a new shirt.
听下面一段较长对话，回答以下小题。
1.How much will the man pay in total?
A.$20. B.$25. C.$45.
2.How did the man get his shirt dirty?
A.By washing up. B.By eating noodles. C.By cooking vegetable soup.
3.When will the man get his shirt back?
A.On Sunday. B.On Monday. C.On Tuesday.
听下面一段较长对话，回答以下小题。
1.What’s the relationship between the speakers?
A.Boss and employee. B.Coworkers. C.Classmates.
2.Why is Jane unhappy?
A.She forgot to answer some emails.
B.She talked to angry customers all morning.
C.She is usually the first one to take complaints.
