下列属于理念识别的功能的是()。
A、导向功能
B、教育功能
C、识别功能
D、凝聚功能
参考答案:A, C, D
已知线段MN=8cm,又点P是线段MN的一个黄金分割点,那么其中较长线段MP的长是______cm.
It has been estimated that only 21 percent of______world’s land surface can be cultivated and that only 7.6 percent is actually under______cultivation.
A./.../ B.the...the C./...the D.the.../