A-A+
Safety officials have earnestly questioned whe
问题详情
Safety officials have earnestly questioned whether the increased use of synthetic materials heightens the risk of fire.
A．cautiously
B．severely
C．accurately
D．seriously
参考答案
正确答案：D
解析：cautiously谨慎地：severely严重地；accurately准确地：seriously严肃认真地。因为 earnestly表示“认真地”，故选D项。
