反应速度与酶浓度成正比的条件是A．底物被酶饱和 B．反应速度达最大 C．酶浓度远大于

Something was crying outside. So I went out to see what was happening. A big cat sat by the door. It must run for a long time as it looked tired and dirty. I let it in my house and took out some food; this poor cat ate all, but still looked starving…, so I got my own cats’ fish, and the cat ate that too!

My five-year-old son and eight-year-old daughter were interested in the cat. They bathed (给……洗澡) it and fed it more food. They wanted to keep it. But I didn’t agree. It was not because I didn’t love it. We already had 2 cats and 2 dogs and our house was not big enough to keep more. Another reason was that I thought maybe it got lost. And its owner (主人) must be worried about it. Then I posted notices all over the town in the hope of finding its home. I also bought an ad (广告)time on a radio station. Three weeks passed, but there was no response (答复).

Finally, I decided to keep the cat. Our house was small, but I would take good care of it as possible as I could.  

小题1:What did the cat look like when it came to the writer’s home?

A．Tired but beautiful.

B．Cute and clean.

C．Dirty but lovely.

D．Tired and dirty.小题2:Why didn’t the writer agree to keep the cat?

A． The children liked to hit the cat.

B．The cat was too small.

C．He wanted to help the cat find its owner.

D．He didn’t like it.小题3:What does the underlined word“starving”mean in Chinese？

A．饥饿的

B．忧郁的

C．恐惧的

D．沮丧的小题4:Which of the following is NOT true according to the passage?

A．At last, the writer had three cats and two dogs.

B．The writer’s house was too small to keep the cat.

C．The writer’s daughter is three years younger than his son.

D．The writer tried hard to find the cat’s home.小题5:What is the passage mainly about?

A．Why the writer didn’t want to keep cats any more.

B．How the writer found a cat and raised 饲养 it.

C．How the writer’s family looked after a cat.

D．What the writer did to find the cat’s owner.

在最高限额成本加固定最大酬金确定的合同价中，如果实际工程成本在报价成本与限额成本之间，则承包人能得到( )。

A．成本加酬金

B．成本

C．成本、酬金和奖励

D．低于报价成本的部分

工程质量问题成因不包括( )。

A．违背建设程序

B．违反法规行为

C．施工管理不到位

D．战争

载波通信是以（）作为传输媒介的通信方式。

读某区域小比例尺等温线分布图，回答问题

若a

A.塔斯马尼亚岛正值隆冬季节

B.圣地亚哥正值雨季

C.夏威夷高压势力强盛

D.赞比亚草原一片葱绿