12、
A.He would rather study by himself.
B.He and Emma argued recently.
C.He does not want to bother Emma so late in the evening.
D.He heard Emma did poorly in the last exam.
13、听音频，回答下列13-37题
A.To purchase his plane ticket.
B.To pick up a passport application form.
C.To change his plane ticket.
D.To arrange for his accommodations in Europe.
14、
A.He's spoken to her on the phone.
B.He stayed in her apartment for one summer.
C.He went on a summer trip with her.
D.He used to work with her.
15、
A.3 weeks.
B.3 months.
C.2 months.
D.Over 1 year.
16、
A.Leave it vacant.
B.Rent it to the man she is talking with.
C.Sublet it to Jim Thomas.
D.Ask his landlord to sublet it.
17、听音频，回答下列17-41题
A.Billions of customers.
B.Millions of customers.
C.Ten millions of customers.
D.Ten billions of customers.
18、
A.Fried chicken, burgers and salads.
B.Fried chicken, burgers and fries.
C.Fried chicken, fries and salads.
D.Fried chicken, salads and sandwich.
19、
A.Having more decayed teeth.
B.Eating more.
C.Getting depressed easier.
D.Losing appetites for other food.
20、
A.Fast food contains high amount of salt.
B.Eating fast food causes depression.
C.People should eat less fast food.
D.Eating fast food increase the risk for depression.
21、听音频，回答下列21-45题
A.Dogs are good companions.
B.Dogs can help relieve stresses.
C.Dogs can help increase physical exercises.
D.Dogs can help work better.
22、
A.Bringing dogs to work can help reduce stresses.
B.Bringing dogs to work would cause chaos.
C.Bringing dogs to work is not permitted.
D.Bringing dogs to work needs to pay.
23、
A.The reasons for raising a dog.
B.The benefits of bringing dogs to work.
C.The problems caused by raising a dog.
D.The problems caused by bring a dog to work.
24、听音频，回答下列24-48题
A.People open the container of the milK
B.Special bacteria are added to milk.
C.People stir the milK
D.People drink the milk.
25、
A.Whey proteins.
B.Casein proteins.
C.Special bacteria.
D.Stabilizer.
26、
A.You drain it off.
B.You mix it back to the yogurt.
C.You do nothing.
D.You lick it directly.