题目内容
如图所示，用吊索起吊重为W的构件，两斜索与构件所成的角度为α，吊点对称，则斜索内力最大时的角度α为()。
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According to the author, the phrase "learning to use a computer" (Line 4, Para. 3) means learning ______.
Learning how to use a computer and learning how to program one are two distinct activities. A case might be made that the competent citizens of tomorrow should free themselves from their fear of computers. But this is quite different from saying that all ought to know how to program one. Leave that to people who have chosen programming as a career. While programming can be lots of fun, and while our society needs some people who are experts at it, the same is true of auto repair and violin-making.
Learning how to use a computer is not that difficult, and it gets easier all the time as programs become more "user-friendly". Let us assume that in the future everyone is going to have to know how to use a computer to be a competent citizen. What does the phrase "learning to use a computer" mean？ It rounds like "learning to drive a car", that is, it sounds as if there is some set of definite skills that, once acquired, enable one to use a computer.
In fact, "learning to use a computer" is much more like "learning to play a game", but learning the rules of one game may not help you play a second game, whose rules may not be the same. There is no such thing as teaching someone how to use a computer, One can only teach people to use this or that program and generally that is easily accomplished.
To be the competent citizens of tomorrow, people should ______.
High-ranking corporate leaders seem to be in favor of promoting diversity so as to ______.
Which of the following statements is true？
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