了解胎儿宫内生长发育的情况可根据（） A.每天早晚自测胎动 B.宫高腹围及胎头双顶径

已知函数f（x）=（x³+ax）e^x，x∈R．

（I）若a=0，求函数y=f（x）的单调区间；

（II）若f（x）在区间（0，1）上单调递减，求a的取值范围．

评标委员会提出书面评标报告后，招标人一般应在( )日内确定中标人，但最迟应在投标有效期结束日( )个工作日前确定。

A．10，15

B．15，20

C．15，30

D．20，30

阅读理解

     "What are you doing asleep on a park bench in the middle of the day naked?"

     "Well, you see, officer, it all started this morning. I woke up to the sound of the big master's alarm

clock and jumped off my doggy bed. I wandered down into the kitchen and sat down to wait for

breakfast."

     " Hang on! What do you mean by doggy bed?"

     "Well, I am actually a dog. Let me finish my explanation. Anyway, when the big master came

downstairs I could tell that it would be a busy day, because he was rushing around. He fed me quickly

and ran out of the door, not even bothering to get some breakfast for himself. This was fairly normal-he

hardly ate in the morning. "

     I finished my breakfast soon, and then I went upstairs to wake up the little master. After that, I had to

wake up the big mistress. Because I knew how much she hates it , I cautiously walked into the big room

and tried to wake her up gently. Unfortunately, as soon as my nose touched her side, she jumped straight

up and yelled at me to get out of her room. I did that straight away. I headed downstairs again. The little

master was already downstairs. After eating breakfast, he ran out. I followed him as usual and made sure

he got to school safely.

     On my way home, a van stopped beside me. Then I was stuck in a net and thrown into the van. I

started struggling and barking. Immediately I was given a needle and calmed down. When I woke up, I

was lying on a bed. Looking around, I realized I was in a science lab. Strangely, I found I wasn't a dog

anymore! I was human! I started yelling for help and an old man walked in. On seeing me, he shouted

excitedly, 'It worked! It worked!' Then I was given another needle. The next thing I remember is that

you woke me up. So that's why I ended up asleep here naked."

     "Very funny son, now come with me. By the way, what's your name?"

1. From what the man said we know that ________.

A. his big mistress seldom had breakfast

B. there were at least two bedrooms upstairs

C. he waited till his little master returned home

D. he woke up all his masters with his nose

2. What does the underlined word "it" in the fifth paragraph refer to?

A. Being woken up.

B. The dog entering the room.

C. Preparing breakfast.

D. The sound of the alarm clock.

3. What does the officer think of the man's explanation?

A. Funny and believable.

B. Reasonable and acceptable.

C. Unbelievable but interesting.

D. Imaginary but out of date.

4. What most probably will the officer do next?

A. Help the man find his big master.

B. Pursue the old man immediately.

C. Take the man to the police station.

D. Warn dog owners to look after their dogs.  

检查轮胎充气嘴是否漏气时，所用的液体为（）

A.纯净水

B.肥皂水

C.矿泉水

在事故报告和调查处理工作中长期存在的主要问题不包括( )。

A．现行相关立法滞后，不适应事故报告和调查处理工作的需要

B．事故报告和调查处理的程序不规范

C．组织事故调查的主体统一，调查组织职责法定化，事故调查批复的规定明确

D．事故责任追究的力度不够