Most Year 3 students in high schools are working hard day and night for the 2015 college entrance examinations, hoping to gain __________ to their dream universities.

The split between humans and living apes is thought by some scholars ____ 15 to 20 million years ago.[ ]

下列各组词语中加点的字的读音完全不相同的一项是(　　)

There’s no way to get to the small islandwhere my grandparents live by boating

Sometimes our opinions differ _________ what we choose to observe and how we deal with what we’ve observed