物质的量浓度相同时，下列既能与NaOH溶液反应、又能跟盐酸溶液反应的溶液中pH最

有一条船在静水中的航行速度为5米/秒．这条船在水流速度为3米/秒的江水中逆流行驶，通过某座桥下时，船上有一木箱落入水中．10分钟后开始掉头顺流行驶追赶木箱，船从开始掉头航行到木箱落水处的时间是______秒；到追上木箱时，船总共顺流航行了______秒．

拍皮球时，手对皮球施加竖直向下的作用力是10N，球所受的合力是l8N，则皮球所受的重力是______N（不计空气阻力）．

吸收犯

A narrowing of your work interests is implied in almost any transition from a study environment to managerial or professional work. In the humanities and social sciences you will at best reuse only a fraction of the material (1) in three or four years’ study. In most career paths academic knowledge only (2) a background to much more applied decision-making. Even with a " training " form of degree, (3) a few of the procedures or methods (4) in your studies are likely to be continuously relevant in your work. Partly this (5) the greater specialization of most work tasks compared (6) studying. Many graduates are not (7) with the variety involved in (8) from degree study in at least four or five subjects a year to very standardized job (9) . Academic work values (10) inventiveness, originality, and the cultivation of self-realization and self-development. Emphasis is placed (11) generating new ideas and knowledge, assembling (12) information to make a " rational " decision, appreciating basic (13) and theories, and getting involved in fundamental controversies and debates. The humanistic values of higher (14) encourages the feeling of being (15) in a process with a self-developmental rhythm. (16) , even if your employers pursue enlightened personnel development (17) and invest heavily in " human capital " —for example, by rotating graduate trainees to (18) their work experiences—you are still likely to notice and feel (19) about some major restrictions of your (20) and activities compared with a study environment.

（11）（）

A.by

B.on

C.across

D.through