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问题 单项选择题 A1/A2型题

紫外灯下显蓝色荧光的化合物是（）

A.木脂素

B.酚性生物碱

C.倍半萜

D.7-羟基香豆素

E.单糖

答案

参考答案：D

解析：香豆素类化合物在紫外灯下显蓝色荧光，可用于鉴别，所以答案为D。

阅读理解
配对阅读。左栏的5个人想征友，右栏是7位应征人的简介。请将相关信息配对。
( )1. Alan, a 22-year-old
boy, wants to have a female
pen pal who is from Asia,
because he is interested in
Asian countries and their
history.
( )2. Sandy is a Chinese
girl. She likes music,
traveling and playing sports.
She wants a pen pal from
America.
( )3. Mary is from Brazil.
She wants to write to her pen
pal because she doesn't have
a computer.
( )4. Jennifer is16. She
wants to have a pen pal who
is the same age as her.
(     )5. Sam loves talking
with his friends on the
Internet. He thinks it's slow to  write e-mails.		A. Roy, the USA 
    I love sports, music and traveling. I want to meet people
from Asian countries.
B. Bonnie, England
    I'd like to make friends with those who come from all
over the world. I love music, sports and movies.
C. Mario, Egypt
     Hi! I want to have a lot of friends from all over the world.
I prefer to write letters to my friends.
D. Shirley, Japan
     Hi! I'm a university student, a 21-year-old girl. I like to
make friends. I'd like to talk about my country, the culture
and so on.
E. Peter, Korea
    I'm a 15-year-old boy. I like playing computer games,
listening to music and seeing movies. I like to talk with my
friends on the Internet.
F. Sam, France
     Hi! I'm 16. I'd like to make friends with those who are as
old as me. I like listening to R&B and hip-hop music.
G. John, Italy
     I like traveling and meeting new friends. I'm a bit shy, but I can get along well with people.
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单项选择题

下列不属于股票回购缺点的是( )。

A．股票回购需要大量资金支付回购的成本，易造成资金紧缺，资产流动性变差，影响公司发展后劲
B．回购股票可能使公司的发起人股东更注重创业利润的兑现，而忽视公司长远的发展，损害公司的根本利益
C．股票回购容易导致内幕操纵股价
D．股票回购不利于公司实施兼并与收购
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