【单选题】The National Research Council, initiated during World War I, was continued after the war for the encouragement of research in the natural sciences.
【简答题】阅读短文,选择正确答案。 Dear Tom, How are you? We go to school five days a week. I have many friends in my school. And one of them is from Canada. His name is Mike. I am learning English. And I learn to speak En...