Mobile computers-which (71) laptops, notebooks, subnotebooks and handhelds- (72) so ubiquitous in such a short time, no surprise to hear who say: "It will define the leading edge (73) the next five years or so." The most remarkable (74) mobile computers is the amount of data storage and memory packed (75) their tiny boxes. These devices not only handle windows easily but also run storage-hungry programs.

（74）处是（）

A.from

B.for

C.about

D.at

E.on

F.into

我国强化环境法治的主要内容包括( )。

A．鼓励公众监督

B．健全环境法规和标准体系

C．建立对污染受害者的法律援助机制

D．建立环境保护协调机制

E．依法打击各类环境违法行为