问题
选择题
The Food and Drug Administration that anyone who too much the drug
suffer side effects.
A．warned; took; will
B．has warned ;takes; may
C．warns; took; must
D．has warned; will take; need
答案
答案：B
考查时态。句意：食物和药品管理局已经警告了吸毒太多的任何人可能会遭受负面影响。吸毒的动作在警告之前，从句用的一般现在时态，之前的动作为现在完成时态；可能性的推测用may，所以选B。