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刷刷题刷刷变学霸
举一反三
【单选题】Vice Vaccines At first glance, vice vaccines look just great. These injections promise to inactivate drugs such as cocaine, heroin and nicotine in the bloodstream before they reach the brain. Without ...
A.
is valuable to all drug users
B.
is in great demand from the drug users
C.
has brought about more difficulties than values
D.
is still under development
【单选题】Vice Vaccines At first glance, vice vaccines look just great. These injections promise to inactivate drugs such as cocaine, heroin and nicotine in the bloodstream before they reach the brain. Without ...
A.
the injection of drugs into the bloodstream
B.
the inactivation of drugs before they reach the brain
C.
the strong sensation aroused by taking drugs
D.
the addiction to drugs