抗着丝点抗体和抗Scl 70抗体是系统性硬化症的特异性抗体。

A lift is wonderful. It is really only a small room. Rooms usually stay in one place. Lifts travel up and down all day long.

Sometimes a worker stands in the lift. He or she operates it up and down. In modern lifts there is no worker. The people walk in. They know what floor they want. They push a button and the lift goes to that floor. It is all very fast and easy.

Lifts are very important to us. Why? Think about a tall building. Maybe it has twenty floors. Maybe it has fifty or more. Who can walk up all the stairs? Maybe people can climb them one time. Can someone climb thirty floors to an office every day? Can small children walk up to their room on the twenty-fourth floor? Can their mother and father carry food up all those stairs? Of course not.

We can have high buildings because we have lifts. We could not have all the beautiful tall buildings in the world without lifts. They are really wonderful.

小题1:Which of the following is true?

A．A modern lift has no buttons.

B．A modern lift has a worker to operate it.

C．A modern lift can go up and down with no worker in it.

D．A modern lift knows what floor people want.小题2:If you want to go to the floor you want, you_______.

A．ask for help

B．open the door of the lift

C．ring the bell

D．push the right button小题3:Why do people have to use lifts? Because________.

A．they have tall buildings

B．they can't walk up and down

C．old people and children need them

D．lifts are wonderful

对癫痫发作患者的急救首要处置是（）

A.从速给药，控制发作

B.按压人中

C.头颅CT检查寻找病因

D.保持呼吸道通畅，防止窒息

E.保护患者肢体和唇舌等器官，防止跌伤或咬伤

干扰试验中加入干扰物形成的误差是（）

A.操作误差

B.随机误差

C.比例系统误差

D.恒定系统误差

E.方法误差

链传动是由（）所组成。

实行查账征收企业所得税的纳税人，依照税收法律法规及相关规定确定的申报内容，在年度终了之日起（）个月内或自实际经营终止之日起60日内，向税务机关申报年度企业所得税，并办理汇算清缴，结清应缴应退税款。

A、1

B、3

C、5

D、6