参考答案:D
答案解析:肾上腺素加入局麻药注射液中,可以延缓局麻药的吸收,减少吸收中毒的可能性,同时又可延长局麻药的作用时间
If you can''t dig into the field you have chosen for your pursuit, it is hardly possible for you to achieve anything significant in the field.()
动词辨析。achieve完成,达到。A.acquire获得,学到;B.require要求,命令;C.accompany陪伴,伴随;D.accomplish完成,达到,实现。
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