题文
It remains a(n) question whether middle school children should be allowed to use mobile phones at school.
| A．controversial |
| B．solid |
| C．explicit |
| D．dynamic |
推荐试卷
It remains a(n) question whether middle school children should be allowed to use mobile phones at school.
| A．controversial |
| B．solid |
| C．explicit |
| D．dynamic |
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