在-4，|-3.5|，0，π4，54，1，-23中，负数有______．分数有_

阅读短文，并判断正(√)误(×)。

      Hi, this is Liu Yun. I'm going to have a busy weekend! On Saturday, I'm going to the bookstore by subway.

I'm going to buy a new CD and some story-books. Then, I'm going to go home and read the new books. On

Sunday, I'm going to the supermarket with my mother. We're going after lunch. Then, in the evening, I'm going

to visit my aunt. We're going to watch TV together. I will have a nice weekend!

( ) 1. Liu Yun is going to the bookstore by bus.

( ) 2. Liu Yun is going to buy a new VCD and some picture-books.

( ) 3. Liu Yun is going to go home and read the new books.

( ) 4. On Saturday, Liu Yun is going to the supermarket.

( ) 5. In the evening, Liu Yun is going to visit her aunt.

双晶要素

体育行政组织机构的类型主要有哪些？

最易发生腺源性感染的间隙是（）。

A．颌后间隙

B．咽旁间隙

C．颌下间隙

D．舌下间隙

E．颞间隙

以下程序的输出结果是【 】。#includemain(){char *sl,*s2,m；sl=s2=(char*)malloc(sizeof(char)).*sl=15； *s2=20； m=*sl+*s2；printf("％d＼n",m)；}