2．若函数的定义域为[－1，2]，则函数的定义域是

　　 A．　　　　 B．[－1，2]　　　　 C．[－1，5]　　　　 D．

3，设函数，则=

　　 A．0　　　　　　 B．1　　　　　　 C．2　　　　　　 D．

1．设集合，，则下述对应法则中，不能构成A到B的映射的是(　　 )

A．　　　 B．　

C．　 D．

50. We have fount a hotel. Sleep for us is ________ question tonight.

We haven't found a hotel. Sleep for us is _________ question tonight.

A.　 out　　 B. out of　　 C. out of a　　 D. out of the

Keys:

1 ABDB 　2. BCDC 　3. CD 　4. AC 　5. DC 　6. DC 　7 DB 　8 BA 　9 BCA

10 CA　 11 CB 　　12 BAA 　　13 ABC 　　14 AC 　15 CD 　16 AB 　17 CBA

18 BAD 　　19 CA 　　20 AD　 21 CA 　　22 CA 　　23 AC　 　24 DA 　　25 CD

26 BD　 　27 BA 　　28 BA 　　29 BDA 　　30 BC　　 31 CB 　　32 CA 　　33 DB

34 AC 　　35 CA　 　36 DA 　　37 AB 　　38 CDD 　39 AD 　　40 CA 　41 CAB

42 DB 　　43 BC 　　44 DAB 　　45 AC 　　46 BA 　47 CD 　　48 CB 　　49 CB

50 BD

49. I feel like _______ something different.

I would like ________ something different.

A.　 do　　 B. to do　　 C. doing　　 D. being doing

48. He was very busy ________ his friend.

He was too busy ________ his friend.

A.　 receive　　 B. to receive　　 C. receiving　　 D. with receiving

47. Our class is _______ Mr. Wang, our English teacher.

Mr. Wang, our English teacher, is _________ our class.

A.　 in charge　　 B. in the charge　　 C. in the charge of　　 D. in charge of

46. ________ Monday morning he wrote an article on grammar.

________ Monday morning he had written an article on grammar.

A.　 By　　 B. On　　 C. At　　 D. /

45. ________ books of his are on science.

________ his books are on science.

A.　 Two dozen　　 B. Two dozens　　 C. Two dozen of　　 D. Two dozens of

44. She is a good woman, _______ her beauty.

She is a good woman, _______ some shortcomings.

She is a good woman, _______ she is sometimes lack of patience.

A.　 except for　　 B. except that　　 C. but　　 D. besides

43. There were only 12 persons in the bus, _______ a baby.

There were only 12 persons in the bus, a baby ________.

A.　 to include　　 B. including　　 C. included　　 D. include