中国居民平衡膳食宝塔的第四层是
A．粮谷类
B．蔬菜、水果类
C．奶类和豆类食物
D．油脂类
E．动物性食品
参考答案：C
白天，太阳的运行方向是从西到东。[ ]
The survey shows that ______ of the population in the country ______ adults.
A．three fifths; is
B．three fifths; are
C．three fifth; are
D．three fifth; is
