国际公约对发明创造的新颖性的规定是相同的。

语言和语言的碰撞和融合是文化交往的一部分。现今世界，这种交往正在变得更频繁、更迅速，然而从一种语言本身来看，它总是既要保持过去的精华，又要吸收外来因素，否则无法传达新的现实。
在这段话里，“语言与语言的碰撞和融合”是指( )。

A．一种语言对另一种语言的吸收

B．不同语言彼此间的相互影响，相互吸收

C．对外来语言取其精华，去其糟粕

D．既保持本国语言的精华，又吸收外来语言的合理成分

下列疾病不属于遗传的是[ ]

A．先天愚型病

B．白化病

C．智力障碍

D．感冒

某女，不思饮食2月多，食少饮多，唇舌干燥，大便偏干，小便色黄，面黄少华，皮肤失润，舌红少津，苔花剥，脉细数。辨证为（）

A.脾胃不和

B.脾胃气虚

C.燥邪犯肺

D.脾胃阴虚

E.气阴两虚

患者女，30岁。因幼儿时经常服用四环素而致全口四环素牙，影响美观要求脱色。行脱色治疗时，选用最适宜的药物是（）

A.30%氢氧化钙

B.30%次氯酸钠

C.30%过氧化氢

D.30%磷酸

E.30%EDTA

A total of 4.6 million digital televisions have been sold, and the sales of HDTV sets have quadrupled since last year. Consumers have bought HDTVs to play their DVDs and to have clearer pictures and wide screens. Only a small percentage of the people who have purchased HDTVs, however, have actually hooked their TVs up to receive high-definition television digital signals. Perhaps television viewers are having trouble keeping up with the changes in technology. Even the manufacturers of HDTVs, like Mitsubishi, Thomson Multimedia, Sony, and Samsung seem to have a tough time learning how to make their sets work with the various digital TV formats because little standardization has been required or implemented in the industry.

Some of the HDTVs weigh over 200 lbs., and a variety of retailers offer a delivery service to the buyer’s home to help install the heavy sets. This is known as a white-glove service and usually comes with an extra fee. After HDTV purchasers get their sets home and hook them up, they will still need to work to get the digital signals to their systems. Most of the industry’s cable providers do not yet offer high~definition programing, and only about 15% of commercial television stations have switched over to even the lowest improved digital pictures. Worse yet, viewers may need to install antenna before they can even get the digital signals to their new HDTV sets. Another frustration for home-theater seekers is that the current HDTV sets allow owners only to watch high-definition programs, not to record them.

According to the passage, which of the following offers most of the HDTV programmes so far().

A. Retailer delivery services.

B. Cable providers.

C. Commercial television stations.

D. HDTV set manufacturers.