对α、β受体都有阻断作用的药物是( )。 A．拉贝洛尔 B．普萘洛尔 C．阿替洛尔

下列控制噪声的方法分别属于哪一种？A 摩托车上的消声器______； B“掩耳盗铃”______；C在城市中植树造林______．

蛔虫进入人体是通过（  ）

A．呼吸道

B．口腔

C．蚊虫叮咬

D．皮肤

            475 Riverside Drive

New York N.Y. 10027

Jan.15, 2011

Dear John,

I'm sorry you didn't get the part you tried out for in that play. I know how much you wanted to be in the play. Now you feel that maybe acting isn't the right future for you. I think you're wrong. You're a good actor. Do you remember when you played Caesar in your summer theatre group's play? You were excellent . People clapped(鼓掌)every time you walked on stage（舞台). Even the other actors loved you.

All actors have to get used to being turned down for a job. It's part of an actor's life. Even famouse actors don't get every part they want. I think you should give acting another chance. You love it so much, and you're good at it. Don't be discouraged because you lose one part in the play. Wait a bit, and try for another one. After all , you can always give up some other time.

Love,

Jane

小题1:

Jane wrote this letter because____.

A．she wanted John to get a part in the play he was trying out for

B．she wanted to tell John that he shouldn't give up acting.

C．she wanted to tell John how to become an actor.

D．she was unhappy with John.小题2:

Jane talks about other actors to show Jon that ____.

A．they are as bad as he is

B．acting is a hard life

C．they sometimes get turned down for parts they want

D．they are lucky enough小题3:

What does Jane think of John?

A．He is a good actor, and some day he will be successful.

B．He is too easily dicouraged to become a good actor.

C．He is a better actor than the person who has got the part.

D．He is as unlucky as the other actors.小题4:

The person who wrote this letter probably ____.

A．is an actress.

B．cares about John

C．wants to be an actress some day

D．envies at John's success.

双氧水灭菌的两种形式是（）和喷涂式。

在采用收款凭证、付款凭证和转账凭证的情况下，涉及到现金和银行存款之间的划转业务，按规定（）

A.只填收款凭证

B.只填付款凭证

C.既填收款凭证又填付款凭证

D.只填转账凭证