30．Many of the scientists and engineers are judged　　　　 how great their achievements are.

　 　 A．in spite of B．in ways of 　　　 C．in favor of　　　 D．in terms of

29．We welcome rain, but a(an)　　 large amount of rainfall will cause floods.

　 　 A．eventually B．extremely　 C．gradually　 D．constantly

28．Your ideas are very interesting, but we need　　　　 suggestions to get us out of the mess．

　 　 A．impressive　　　 B．similar　　　 C．practical　 D．traditional