定义在R上的单调函数满足对任意x，y均有，且 （1）求的值，并判断的奇偶性； （2）解关于x的不等式并写出其解集：
I advised that he ______ to the hospital at once, but he insisted that he ______ quite well then. A. was sent; felt B. be sent; was feeling C. he sent; fee
“今天科学技术不仅仅是自然科学与工程技术，还是认识客观世界、改造客观世界的整个知识体系，而这个体系的最高概括是马克思主义哲学。”钱学
--- ? --- He is creative and outgoing. A. What is the new teacher B. What is the ne
下图表示一个二倍体动物细胞进行细胞分裂过程中，细胞核内染色体数目及DNA数的变化，则下列叙述不正确的是 A．图中两曲线重叠的各段所在时期，
One afternoon, Tim, my son, came home from school with a confused look on his face. I asked him what was the matter and he said, “Are people the same even though their skin(皮肤) colors are diff
