单项选择题
A.问题是新的目标总是跟存在的政策不一致。 B.问题在于新目标总是不坚持现有政策。 C.问题是新目标不总是与现有政策相一致。 D.问题在于新目标不总是坚持存在的政策。
A. They had claws to help them climb. B. They could fly long distances. C. They had four wings like hoatzins. D. They had a head with long feathers on the top.
A. they are the first places sinking into the sea B. they are the both sinking into the mud where they stand C. they will disappear in the future D. their trouble is caused by global warming