硫酸-荧光反应为地西泮的特征鉴别反应之一。地西泮加硫酸溶解后，在紫外光灯下显（） A

阅读理解。

     Every Sunday,  Mrs Black  goes shopping.  Today she is going to do  some shopping  as usual.  She

walks to the bus stop with a big bag. Suddenly(突然),  she is stopped (拦住)  by a new red car. When

she stops, she sees a policeman( 警察) .  He  says  to  Mrs Black,  "I want to ask you some questions.

What's your name?"

      "Jane Black, " Mrs Black answers.

      "And what's your address?" he goes on.  "36 Rose Street," she says, "But I don't know why you are

asking me these questions?"

      " Can you see the sign(标牌)  here?" asks the policeman.

      "Yes, I can," says Mrs Black.  "It says,  - No parking(禁止停车)"

        " Yes,  madam,  but why do you park your car here?" the policeman says.

        At this time,  a girl comes.  She says to the  policeman,    " Dad,know I can find you here.  Happy

Birthdayl I bring you my birthday present. "

       "Thank you, dearl But where is it?"

       " Here it is ! "  his daughter says ,  pointing(指着) at the  red-car.

根据短文内容,判断正( T)误( F) .

( )1. Mrs Black goes shopping every Sunday.

( )2. Today is Saturday.

( )3. Mrs Black has a red car.

(     )4. Today is the policeman's birthday.

( )5. The policeman buys her daughter a red car.

适用于新生隐球菌检查的染色方法

A．革兰染色
B．抗酸染色
C．墨汁负染色
D．瑞氏染色
E．乳酸酚棉兰染色

与形成蜘蛛痣有关的因素是( )。

A．严重感染
B．酗酒
C．血小板减少
D．雌激素过多
E．血糖过高

若进栈序列为a，b，c，则通过入出栈操作可能得到的a，b，c的不同排列个数为 【2】 。

食品添加剂的作用有

A．改善食品品质

B．掩盖食品某些缺陷

C．改善食品色、香、味

D．食品加工工艺的需要

E．防腐作用