The investigators seriously condemned the drug firms for
A．they do not let their opponents to resort to the court
B．they use clusters of patents to protect their product
C．they bribe the cheaper generic opponents
D．they do not pass on the savings made by use of generic drugs
A．Because he was of iii health.
B．Because he was in a bad mood.
C．Because his wife abandoned him.
D．Because his immune system was not strong enough.
The view that animals have consciousness may not be convincing to all because______.
A．there is not sufficient evident to prove it
B．there is not rigorous evidence to prove it
C．there is not scientific evidence to prove it
D．there is not direct evidence to prove it
A．The number of sun flares.
B．The heat of the sun.
C．The sunspot cycle.