目前我国农村土地经营的基本单位是：（）A、国家B、企业主C、家庭D、个人

工作温度大于450℃的主蒸汽管道、高温再热蒸汽管道和高温导汽管的安装焊缝应采取氩弧焊打底。焊缝在热处理后或焊后（不需热处理的焊缝）应进行（）无损探伤。

A.100%

B.50%

C.20%

下列关于表皮样囊肿说法不正确的是（）。

A.是一种真皮内含有角质的囊肿

B.好发于青年、儿童

C.通常见于头皮、面部、颈部、躯干及臀部等

D.多发表皮样囊肿见于Gardner综合征

E.外伤性表皮样囊肿也多发于头皮、面部、颈部、躯干及臀部等

在进行生态环境现状调查时，下列要素中由于是建造和维持生态系统的基础而应作为调查重点的是( )。

A．作为生态系统消费者的动物

B．作为生态系统分解者的微生物

C．作为生态系统生产者的植被

D．支持植被生长的土壤

选出没有语病的一句。( )

A．对于黑板报的艺术质量问题，应该引起班委会的重视。

B．这位老艺术家的表演，可以说已经达到惟妙惟肖、出神入化的境界。

C．有些炎症，西药中药都能治。不但中药能与一般抗菌类媲美，而且副作用小，成本也较低。

D．三年当中，这个县的粮食总产量，以平均每年递增百分之二十的速度，大踏步向前发展。

Comparisons were drawn between the development of television in the 20th century and the diffusion of printing in the 15th and 16th centuries. Yet much had happened between. As was discussed before, it was not until the 19th century that the newspaper became the dominant pre- electronic (61) , following in the wake of the pamphlet and the book and in the (62) of the periodical. It was during the same time that the communications revolution (63) UP, beginning with transport, the railway, and leading on through the telegraph, the telephone, radio, and motion pictures into the 20th-century world of the motor car and the air plane. Not everyone sees that process in (64) . It is important to do so.

It is generally recognized, (65) , that the introduction of the computer in the early 20th century, (66) by the invention of the integrated circuit during the 1960s, radically changed the process, although its impact on the media was not immediately (67) . As time went by, computers became smaller and more powerful, and they became "personal" too, as well as (68) , with display becoming sharper and storage (69) increasing. They were thought of, like people, (70) generations, with the distance between generations much (71) .

It was within the computer age that the term "information society" began to be widely used to describe the (72) within which we now live. The communications revolution has (73) both work and leisure and how we think and feel both about place and time, but there have been (74) view about its economic, political, social and cultural implications. "Benefits" have been weighed (75) "harmful" outcomes. And generalizations have proved difficult.

（70）处填（）。

A．by means of

B．in terms of

C．with regard to

D．in line with