1 . —Guess what? The painting which John bought last month is not by Picasso.
—Well, it’s only a copy and it’s _________. John felt regretful to buy it.
—Well, it’s only a copy and it’s _________. John felt regretful to buy it.
| A．useful | B．valuable | C．worthless | D．traditional |
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2 . A _________ place means there isn’t anything or anybody to live or grow at all.
| A．lively | B．worthless | C．lifeless |
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3 . Water is such a(n) ________ resource (资源) that we need to do everything we can to save it.
| A．expensive | B．valuable | C．worthless |
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