Engineering is ______ challenging course of study that requires ______ thoroughunderstanding of mathematics and science.
| A．the; a | B．a; the | C．不填；不填 | D．a; a |
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The loss has not yet been ______ accurately, but it is believed to be well beyond a hundred million dollars.
| A．calculated | B．considered | C．completed | D．controlled |
During the war there was a serious lack of food. It was not unusual that even the wealthy families had to ______ bread for days.
| A．eat up | B．give away | C．do without | D．deal with |
Would you please ______ the paper for me and see if there are any obvious mistakes?
| A．look around | B．look into | C．look up | D．look through |
To make members of a team perform better,the trainer first of all has to know their _____ and weaknesses．
| A．strengths | B．benefits |
| C．techniques | D．values |
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