Useful drugs are made from inorganic substances or are plant and animal by-products.

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问题 Useful drugs are made from inorganic substances or are plant and animal by-products.

选项 A、materials
B、derivatives
C、chemicals
D、ingredients

答案B

解析 by-product副产品，派生。

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本试题收录于：医学博士外语题库考研分类

医学博士外语

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Useful drugs are made from inorganic substances or are plant and animal by-products.

医学博士外语

考研

Justbeforedawnwereceivedacallthatanunresponsiveinfantwasbeingbroughtbyemergencymedicalservicestoourhospital.

High-speedlivinghasbecomeafactoflife,andthefranticpaceistakingitstoll,accordingtosciencewriterJamesGleick.

High-speedlivinghasbecomeafactoflife,andthefranticpaceistakingitstoll,accordingtosciencewriterJamesGleick.

Youfeelgenerallydepressedandunabletoconcentrate.Your【C1】ofdailyactivitymaychange;youfindyourself【C2】a

A、Partofamedicaltextbook.B、Amedicaljournal.C、Somemicroscopeslides.D、Thespeaker’scurrentresearch.A根据文章开头的“themain

Hisbehaviorwasso______thateventhemercifulpeoplecouldnotforgivehim.

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