(单选题)1: 第三次作业问题3
A: To make the woman angry.
B: David is the man's good friend.
C: To please the man's mother.
D: David is good at carrying on conversations.


(单选题)2: 第三次作业问题19
A: It takes a longer time to melt.
B: It is lighter to carry.
C: It is not so cold as ordinary ice.
D: It is cleaner to use than ordinary ice.


(单选题)3: 第三次作业问题5
A: He doesn't like Japanese food.
B: He doesn't want to eat out.
C: He wants to eat somewhere else.
D: He wants to pay.


(单选题)4: 第三次作业问题1
A: Librarian and student.
B: Customer and repairman.
C: Boss and secretary.
D: Operator and caller.


(单选题)5: 第三次作业问题12
A: To attract more students.
B: To make the summer school more like a holiday.
C: To let the students have a good rest.
D: To make the courses suitable for students of all levels.


(单选题)6: 第三次作业问题14
A: Because it takes too long to process all the applications.
B: Because it is a library for special purposes.
C: Because its resources are limited.
D: Because there is a shortage of staff.


(单选题)7: 第三次作业问题20
A: In the 1920's.
B: In the 1930's.
C: In the 1940's.
D: In the 1950's.


(单选题)8: 第三次作业问题10
A: Find a large room.
B: Sell the old table.
C: Rearrange some furniture.
D: Buy two bookshelves.


(单选题)9: 第三次作业问题2
A: Look for the key.
B: Repair the car.
C: Paint a shelf.
D: Fix a shelf.


(单选题)10: 第三次作业问题9
A: Three lessons.
B: Five lessons.
C: Twelve lessons.
D: Fifteen lessons.


(单选题)11: 第三次作业问题15
A: Discard his application form.
B: Forbid him to borrow any items.
C: Ask him to apply again.
D: Cancel his video card.


(单选题)12: 第三次作业问题14
A: Because it takes too long to process all the applications.
B: Because it is a library for special purposes.
C: Because its resources are limited.
D: Because there is a shortage of staff.


(单选题)13: 第三次作业问题11
A: Language courses.
B: Courses in British history.
C: Courses in sports.
D: Teacher training courses.


(单选题)14: 第三次作业问题4（作业音频请到课程公告里下载）
A: He must attend a class.
B: He must meet his teacher.
C: He must go out with his girlfriend.
D: He must stay at school to finish his homework.


(单选题)15: 第三次作业问题18
A: By heating dry ice.
B: By turning ordinary ice into steam.
C: By passing steam over dry ice.
D: By mixing dry ice with ordinary ice.


(单选题)16: 第三次作业问题17
A: Gas.
B: Vapor.
C: Water.
D: Chemicals.


(单选题)17: 第三次作业问题7
A: He is attending his sick mother at home.
B: He is on a European tour with his mother.
C: He is in Europe to see his mother.
D: He is at home on sick leave.


(单选题)18: 第三次作业问题13
A: Because they all work very hard.
B: Because their teachers are all native speakers of English.
C: Because they are all advanced students.
D: Because they learn not only in but also out of class.


(单选题)19: 第三次作业问题6
A: He didn't pass the physics exam.
B: He didn't work as hard as he was supposed to .
C: He did better in an earlier exam.
D: He found something wrong with the exam.


(单选题)20: 第三次作业问题16
A: One week.
B: One month.
C: Two weeks.
D: Two months.

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