解方程：3x-23-12=7x-412．

阅读理解。

    The Beets were a new couple (夫妇). The things in their rooms, such as the television, the computer,

the fridge, furniture and so on, were all left by their parents. They only paid some money for their food

and clothes. But they tried their best to save money. If they had something important to tell their friends,

they always visited them instead of calling them.

    One day, it was a quarter past nine. Mr Beet didn't come back. His wife was a little worried. The supper

was cold and she had waited for two hours and a half. She was sitting by the table in the dark room.

     Suddenly the woman heard someone coming upstairs. It was her husband's step. She hurried to open

the door. In the dark she could hear his deep breathing. As soon as he sat down, she turned on the light and

found he looked very tired.

    "Why do you come back so late, dear?" asked the woman. "Haven't you caught a bus?"

     "Yes, but I didn't take it."

     "Why not?"

     "I ran after it so that I saved two dollars this evening."

     "That's great!" the woman said happily. "Run after a taxi next time and you'll save both more time and

money."

1. The supper was ready at           . [ ]

A. 6:15

B. 6:30

C. 6:45

D. 7:15

2. Mrs Beet sat in the dark because           . [ ]

A. she wanted to save money

B. she didn't like the bright light

C. she was afraid to be seen

D. she wanted to have a good rest

3. Mr Beet went back           . [ ]

A. by taxi

B. by bus

C. on foot

D. by bike

4. When Mr Beet got home that evening,            . [ ]

A. his wife was angry with him

B. he was very tired

C. he was too hungry to say a word

D. his wife felt sorry

5. Mrs Beet hoped           . [ ]

A. her husband went home by bus the next time

B. her husband could keep on doing exercise

C. her husband could be stronger and stronger

D. her husband could save more money and time

女性，48岁，皮肤巩膜黄染半年，伴瘙痒，食欲缺乏，大便颜色变浅，性状正常，病后无腹痛及发热，否认肝炎史。查体：巩膜皮肤中度黄染，皮肤有抓痕，心肺听诊正常；腹平软，无压痛。肝肋下1cm，质软，无压痛；脾未扪及。化验：SGPT20U，γ-GT80U/L，尿胆红素阳性，尿胆原阴性。下述哪项检查能作出明确的定位及定性诊断（）。

A.ERCP

B.腹腔镜

C.钡餐

D.胃镜

E.肝扫描

接上题，如果王先生的叔叔为了庆贺二人结婚，给予二人结婚贺礼20万元，则这20万元属于（）。

A．夫妻法定特有财产 

B．王先生婚前个人财产 

C．夫妻共同财产 

D．赵女士个人财产

下列桥体与龈面的关系中，都是重要的除外（）

A.接触面积小

B.高度光滑无刺激

C.接触面无压力

D.楔状隙通畅，便于清洁

E.桥体应有足够强度

仪表工厂风系统工作流程如下（）

A、进气→过滤→压缩→后冷却→油气分离→空气储存→工厂风用户→过滤→仪表风储存→仪表风用户

B、进气→压缩→后冷却→油气分离→空气储存→工厂风用户→过滤→干燥→过滤→仪表风储存→仪表风用户

C、进气→过滤→压缩→后冷却→空气储存→工厂风用户→过滤→干燥→过滤→仪表风储存→仪表风用户

D、进气→过滤→压缩→后冷却→油气分离→空气储存→工厂风用户→过滤→干燥→过滤→仪表风储存→仪表风用户