问题 单项选择题 A1/A2型题

由PHA激发的淋巴细胞转化试验,仅反映T细胞的增殖功能,一般正常人外周血的淋巴细胞转化率为()

A.30%~50%

B.50%~70%

C.60%~80%

D.70%~90%

E.80%~100%

答案

参考答案:C

解析:转化率在一定程度上可反映细胞免疫功能,正常人的T细胞转化率为60%~80%,小于50%可视为降低。

改错题

下列句子中各有一处错误,请指出并改正:

( ) __________ 1. He doesn't wonderful tricks any more.

                                        A            B         C        D

( ) __________ 2. She didn't  stop  until she gets to the end.

                                        A       B      C            D

(     ) __________ 3. She  oughts to  drive  to work.

                                A          B          C        D

( ) __________ 4. Don't  afraid of  that dog. It's very kind.

                                  A          B           C                 D

(     ) __________ 5. You must be  carefully. You made a lot of mistakes.

                                           A           B                C                   D

( ) __________ 6. The twins look the same  but  their hobbies are different from.

                                                        A           B               C                   D

( ) __________ 7. Simon couldn't play football outside because his homework.

                                              A                            B         C             D

( ) __________ 8. Must I get  someone to help her? No, you mustn't.

                                 A       B                     C                            D

(     ) __________ 9. How many  is  your telephone number

                                     A         B    C                      D

( ) __________ 10. Not  be  late again next time.

                                  A    B    C                D

问答题 简答题