图中是两条大河的河口图,图中的小岛因泥沙不断堆积而扩展,最终将与河的哪岸相连:
①甲岸 ②乙岸 ③丙岸 ④丁岸
A、①③
B、②③
C、①④
D、②④
答案:C
It is ________ that he has been addicted to the drugs and has difficulty quitting it.[ ]
A. obviously
B. apparently
C. possibly
D. likely
()
A.cosx
B.-cosx
C.-sinx
D.sinx