桩机作业结束后，应将桩锤落下，切断（）和电路开关、停机制动后人可离开。 A.电源 B

阅读理解。

     A father asks his son, "How many letters are there in the alphabet?" "I don't know," says his son. His

father says, "You don't know? You are in school for many years and you don't know how many letters

there are in the alphabet?" He is very angry. His son says, "No. But let me ask you a question, Dad. You

often go to the post office, please tell me how many letters there are in the post office?"

根据短文内容判断句子正（T）误（F）。

( )1. From this story, we know the son is good at English.

( )2. The son studies at school over (超过) one year.

( )3. The father gets angry because his son is not polite (有礼貌) to him.

( )4. The father knows how many letters there are in the post office.

( )5. There are twenty-six letters in the alphabet.

We use the Internet for many things: business, shopping, writing letters, talking to people, finding information, and so on. In recent years, a new kind of English has grown on the Internet. There’s no real word for it yet, so we’ll call it e-talk. People don’t like typing too much. To save time, they turn phrases (短语) into a few letters called acronyms(首字母缩略词). Acronyms are often used in chat rooms.

Some of them are:

BTW(by the way)     BRB (be right back)

LOL (laughing out loud) IMO (in my opinion)

People also use many abbreviations. They are shortened forms of words. Some common abbreviations are:

info (information)    puter (computer)    pic (picture)      sec (second)

We usually don’t see people when we communicate on the Net, so people have new ways to show feelings. Most people use their keyboards to draw “feeling”, such as:

: ) (happy)     :-( (sad) ;    : P (joking)   : O (surprised)

These days, many forums have picture feelings. For example:

happy          sad         angry        cool

There are even whole new words, like ‘newbie’ (someone who is new on a chat board or forum). When you write something bad about someone else, it’s called ‘flaming’ the person.

It takes time to get used to e-talk. Also, different groups in the Net have their own special ways of communicating. Newbies sometimes have to ask other people what they mean. As the Internet grows, e-talk will continue to grow and change.

小题1: Why do people type acronyms?

A．To show their feelings.

B．To make jokes.

C．Because people can type them quickly.

D．In this way, newbies won’t understand them.小题2:What does “My puter is not working well. :-( ” mean?

A．The person is happy about getting a new computer.

B．The person has to go away from their computer.

C．The person is angry at somebody.

D．The person is sad that his computer is having problems.小题3:If someone is angry, what may he type?

A．

B．

C．LOL

D．BRB小题4:E-talk will probably_________.

A．keep changing

B．stay the same

C．be used by people on the telephone

D．be easy for newbies to understand小题5:People can do the following through the Internet except _________.

A. doing shopping                B. writing diaries

C. eating foods                   C. playing games

经过炮制后可以缓和燥性，增强健脾燥湿作用的是

A．生苍术

B．炒苍术

C．麸炒苍术

D．米炒苍术

E．焦苍术

景区应当在醒目位置公示哪些价格？

某科学家用标记胸腺嘧啶脱氧核苷酸，标记尿嘧啶核糖核苷酸研究细胞的分裂，已知相应的细胞周期为20h，两种核苷酸被利用的情况为右上图。相关叙述中不正确的是（）

A.和利用量，可分别表示细胞中的DNA复制和转录的强度

B.主要用于蛋白质合成，则主要作为DNA复制和转录原料

C.间期细胞中的细胞核、核糖体、线粒体代谢活跃，7～12小时可能发生突变

D.DNA复制速率最快的时间在10h左右，分裂期时间不足8小时