Up to now, our society ________ with limited living space and a shortage of natural resources.
| A．has been challenged | B．is being challenged |
| C．is challenging | D．has challenged |
相关试题
I’m trying to break the _______ of getting up too late.
| A．tradition | B．convenience | C．habit | D．leisure |
China has got a good _____for fighting against the flu with its careful and smooth organization．
| A．reputation | B．influence | C．impression | D．knowledge |
Hiking by oneself can be fun and good for health. It may also be good for ______ building.
| A．respect | B．friendship | C．reputation | D．character |
One thousand dollars a month is not a fortune but would help cover my living _______.
| A．bills | B．expenses | C．prices | D．charges |
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