—What do you think of the 3D-printed ______?
—I’m afraid they are not safe enough to live in.
| A．tools | B．buildings | C．cars | D．toys |
相关试题
It’s time ______ the weather report. Turn on the radio, please.
| A．to | B．in | C．at | D．for |
—Alan, it’s late. Why not go to bed?
— Jenny hasn’t come back yet. I _______ for her.
| A．waited | B．have waited | C．am waiting | D．was waiting |
—Steve is good at writing short stories.
— So he is. But he writes _______ than us. So he can’t get good grades in writing.
| A．most carefully | B．more carefully | C．less carefully | D．least carefully |
After the Asian Games, ______ people came to Guangzhou for a visit during holidays.
| A．thousand | B．thousands of | C．five thousands |
D．five thousands of |
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