2. 考研
  3. Safety officials have earnestly questioned whether the increased use of synthetic materials heightens the risk of fire.

Safety officials have earnestly questioned whether the increased use of synthetic materials heightens the risk of fire.

admin2007-07-06  127
问题 Safety officials have earnestly questioned whether the increased use of synthetic materials heightens the risk of fire.
选项 A、cautiously
B、severely
C、accurately
D、seriously
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。
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