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问题 单项选择题

下列关于超敏反应说法不正确的是

A．产生自身抗体和(或)自身应答性 T淋巴细胞

B．又称变态反应或过敏反应

C．是免疫毒性的表现之一

D．接触性皮炎和过敏性哮喘是由于职业性接触而诱发的超敏反应性疾病中最常见的两种

E．根据超敏反应发生机制和临床特点，将其分为四型

答案

参考答案：B

选择题

如右图所示是一个能吹出冷热风的电吹风简化电路图，图中A是吹风机，B是电热丝，则下列分析正确的是（   ）

A．只闭合开关S2，电吹风吹出热风

B．只闭合开关S1，电吹风吹出冷风

C．同时闭合开关S1、S2，电吹风吹出冷风

D．同时闭合开关S1、S2，电吹风吹出热风
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改错题
单句改错。
( )1. The girl asked me,"Would you like any apples?"
             A                   B                       C   D
(     )2. Under the soldiers' help, we Lulled the car out of the channel.
              A                                 B              C          D
(     )3. They were so exciting that they could not say a word.
                       A            B                      C               D
(     )4.Though he's very young, but he wants the bigest apple.
              A                       B       C                        D
(     )5. Would you please not to make any noise? the baby has just fallen asleep.
              A                         B                C                            D		________                    

________

________

________

________
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