以真子午线北方向作为基本方向顺时针方向量至某直线的水平夹角称为（）。
A、真方位角
B、子午线收敛角
C、磁方向角
D、坐标方位角
参考答案：A
跟据汉语提示，用适当的单词填空。
1. Our English teacher is very kind. She is ________ (友好) to us students.
2. My house is on a ________ (繁华的) street.
3. Look, the boys ________ (正在读书) under the tree over there.
4. The ________ (叶子) of the tree are yellow.
5. The library is between the restaurant and the ________. (超级市场)
植物性食品中的铁较难吸收，动物性食品（）是食物铁的良好来源。
A、肌肉
B、肝脏
C、猪血
D、奶类
E、米饭
