单项选择题

There is no doubt that much Often pollution caused could be controlled if a lot of companies individuals and govemments would make more efforts．

A．有一点可以肯定，只要公司、个人和政府再做些努力，很多污染都是可以得到控制的。
B．可以肯定地说，许多污染都是无法控制的，但更多的公司、个人和政府要再做些努力。
C．毋庸置疑，污染是完全可以控制的，因此公司、个人和政府都应更加努力。
D．毫无疑问，如果大量的公司、个人和政府不出更大力气，很多污染都是无法控制的。

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热门试题

单项选择题

Four thousand years ago______.

A．people began practicing civil engineering in order to become professional engineers
B．civil engineers began putting their knowledge into practice
C．there appeared civil engineers by profession
D．civil engineers got more involved in their profession

单项选择题

Civil engineers of ancient times were intelligent enough to build entire cities, including______.

A．systems of pipes, bridges, and pyramids
B．pipeline systems, bridges and farmlands
C．water supply systems, bridges, and pipelines for cultivation
D．water supply systems, bridges and structures