已知全集为 U, 集合 A, B 为 U的子集, 若(∁ U A) ∩ B=∅, 则 A∩ B=()

已知全集为 U, 集合 A, B 为 U的子集, 若(∁ U A) ∩ B=∅, 则 A∩ B=()

查看答案

Work hard, _________ you will get good grades.

Work hard, _________ you will get good grades.

查看答案

I waited ______ they finished talking.

I waited ______ they finished talking.

查看答案

—Who wrote this novel?—Oh, it ________ by Lu Xun.

—Who wrote this novel?—Oh, it ________ by Lu Xun.

查看答案

—The rain came to a stop the night before. The fields are still full of water.—I

—The rain came to a stop the night before. The fields are still full of water.—It _____ for nearly a

查看答案