常见的表达纯洁色调的单色插花有
A、 A.黄色
B、B．白色
C、C.蓝色
D、D.绿色

单项选择题Mary thinks that people don't need to do much travel nowadays as a result of ______.A.less emphasis on personal contact.B.advances in modern telecommunications.C.recent changes in people's concepts.D.more potential damage to the areA.

单项选择题1999年，中华人民共和国第九届全国人大第二次会议对宪法进行了修改。下列哪一选项属于这次修宪的内容?( )