Not all birds can fly , ______ do all birds build nests.
A、not
B、no
C、never
D、nor
A、eitherRussiannor
B、neitherRussianor
C、noRussiannor
D、neitherRussiannor
A、流感病毒
B、呼吸道合胞病毒
C、轮状病毒
D、柯萨奇病毒1～6型
One of the responsibilities of the Coast Guard is to make sure that all ships______followtraffic rules in busy harbors.
A、conveniently
B、obediently
C、sufficiently
D、reluctantly
A、20%～30%
B、40%～50%
C、55%～60%
D、65%～70%