单项选择题

It seems to the author that the medicine used by early people _______.

A．was of no real value
B．was probably effective
C．was easy to make
D．did more harm than good
<上一题 目录 下一题>
热门 试题

单项选择题
The “over-the-counter drugs” are those that _______.
A．patients can get without doctors' prescriptions
B．can relieve the symptoms of a disease
C．attack the organism that causes a disease
D．tend to be complex and powerful synthetic drugs
单项选择题
It is implied in the passage that most drugs can be _______.
A．manufactured artificially
B．got from animal sources
C．found naturally in plants
D．made from tree bark
相关试题