对于反应2CO(g)+ O2(g) 
2CO2(g)（正反应为放热反应），在一定条件下建立化学平衡后，下列各条件变化时，能使平衡正向移动的是（ ）
| A．恒温恒容通入He | B．再通入少量CO2 | C．温度升高 | D．加压 |
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Progress______ so far very good and we are sure that the work will be finished on time.
| A．was | B．had been | C．has been | D．will be |
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| A．someone | B．anyone | C．not one | D．no one |
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| A．said | B．to say | C．saying | D．being said |
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| A．can | B．must | C．will | D．may |
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