检查时触摸不清的睾丸，除隐睾，还可以于以下原因（） A.睾丸未发育 B.睾丸发育不良

下列四种分子式所表示的化合物中，有多种同分异构体的是（　　）

A．CH₄O

B．C₂HCl₃

C．C₂H₂Cl₂

D．CH₂O₂

按钮联锁正反转控制线路的优点是操作方便，缺点是容易产生电源两相短路事故。在实际工作中，经常采用按钮，接触器双重联锁（）控制线路。

A、点动

B、自锁

C、顺序启动

D、正反转

测定水泥中三氧化硫的目的是什么？

A jobless man applied for the position of “office boy”at Microsoft.The HR manager interviewed him and then watched him cleaning the floor as a test.

“You are employed.”he said.”Give me our e-mail address and I’ll send you the application to fill in ,as well as date when you may start.”

The man replied,”But Idon’t have a computer,neither an e-mail.”

“I’m sorry,”said the HR manager,”If you don’t have an e-mail,that means you do not exist.And who doesn’t exist cannot have the job.”

The man left with no hope at all.He didn’t know what to do, with only ten dollars in his pocket.He then decided to go to the supermarket and buy 10kg tomatoes.He then sold the tomatoes from door to door.In less than two hours,he succeded to double his capital,He repeated the operation three times,and returned home happily with 60 dollars.

The man realized that he can survive in this way,and started to go every day earlier,and return late,Thus,his money doubled or tripled every day.Shortly,he bought a cart,then a truck,and then he had his own fleet of delivery vehicles.Five years later,the man is one of the biggest food retailers in the US.

He started to plan his family’s future and decided to have a life insurance He called an insurance broker and chose a protection plan.

When the conversation was concluded the broker asked him his e-mail,The man replied,”I don’t have an e-mail.”

The broker answered curiously,”You don’t have an e-mail,and yet have succeeded to build an empire.Can you imagine what you could have been if you had an e-mail?”The man thought for a while and replied,”Yes,I’d be an office boy at Microsoft!”

小题1:Why can’t the man have the job at Microsoft?

A．Because he didn’t have an e-mail

B．B Because he was lazy.

C．Because he didn’t pass the test

D．Because he didn’t have a computer小题2:The underlined word “triple”can be replaced by_______.

A．become 3 times

B．become large

C．increase quickly

D．decrease quickly小题3:According to the passage,which of the following is TRUE?

A．The man is one of the biggest food retailers in the world.

B．The man didn’t give up though he failed the interview.

C．He started his career by selling tomatoes in the supermarket.

D．Those who have e-mails can work at Microsoft.小题4:The man can be described as ______.

A．helpful and considerate

B．smart and hardworking

C．positive and generous

D．stubborn and unselfish小题5:Which proverb can best describe the story?

A．Where there is a will,there is a way.

B．Accidents will happen.

C．Misfortune may be an actual blessing.

D．No pains,no gains.

下列哪种镇痛药对平滑肌有解痉作用（）

A.吗啡

B.苯哌利啶

C.哌替啶

D.二氢埃托啡

E.芬太尼