椎体缺血坏死可出现以下哪些X线表现( ) A.椎体变扁呈厚薄一致的致密扁盘状 B.椎

Do you often like to use disposable（一次性的） chopsticks when eating out? It’s time to drop this habit.

China products（生产） 80 billion pairs of disposable chopsticks every year. “This is enough to cover Tian’anmen Sqaure 363 times,” said Bai Guangxin, chairman of Jilin Forest Industry Group, at the National People’s Congress on March 8.

The government has made some rules to limit（限制）the use of disposable chopsticks. However, there are still many being produced.

“The production of such chopsticks is a heavy burden on national forests,” Bai added. A total of 20 million 20-year-old trees would have to be cut down to make way for this annual production.

Bai called on people to bring their own chopsticks whenever they are eating out. “We first need to bring a change to people’s eating habits and encourage everyone to carry their own chopsticks around.” He also said that there may be technology that can turn wild grass into disposable chopsticks in the future.

小题1:Are there still many disposable chopsticks being produced ?

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小题2:How many pairs of disposable chopsticks does China product every year?

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小题3:What can turn into disposable chopsticks in the future?

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试题一
阅读以下说明，回答问题。
[说明]
某公司总部和三个子公司分别位于四处，其网络结构如图1.15所示，公司总部和各子公司所需主机数如表1.4所示。

表1.4 公司总部与各子公司的主机数

部门	主机数量/台
公司总部	50
子公司A	25
子公司B	10
子公司C	10

[问题] 该公司用一个C类地址块202.119.110.0/24组网，将表1.5中的(1)～(6)处空缺的主机地址或子网掩码填写完整。 表1.5 IP地址规划

部门	可分配的地址范围	子网掩码
公司总部	202.119.110.129～(1)	255.255.255.192
子公司A	(2) ～202.1 19.1 10.94	(3)
子公司B	202.119.110.97～(4)	255.255.255.240
子公司C	(5) ～(6)	255.255.255.240

中国当代先锋戏剧舞台美术写意性，一个不可忽视的内容就是运用夸张变形和什么？（）

A．虚拟

B．怪诞

C．幻觉

社会保险补贴的标准？

软件需求分析一般应确定的是用户对软件的( )。

A．功能需求

B．非功能需求

C．功能性和非功能性需求

D．性能需求