1、. Both my parents were born ____ 1970.
A. at B. in C. on D. to
答案：B
【解析】考查点：本题考查介词的用法。在那一年用介词in。
2、 We should protect the animals ______ danger.
A. on B. in C. of D. at
答案：B
【解析】考查固定短语。句意：我们应该保护处在危险中的动物。同时in danger为固定搭配。
3、. —Mr Hu, can you tell us how to learn math well?
—Sure. But remember nothing can be learned______ hard work.
A.by B. at C. without D. for
答案：C。考查介词。句意：--- 胡先生，你能告诉我怎样学好数学吗？
能，但要记住不努力学习什么也学不了。
