在北半球中纬度高空，一架飞机自东向西飞行，飞机左侧是高压，右侧是低压。据此回答1-2题。

1、飞机飞行方向与风向的关系是[ ]

A、顺风飞行

B、逆风飞行

C、风从南侧吹来

D、风从北侧吹来

2、飞行员发现阳光从右前方射入机舱内，则此时可能是[ ]

A、太阳直射点在北半球，黄昏时分

B、太阳直射点在南半球，黄昏时分

C、太阳直射点在南半球，清晨时分

D、太阳直射点在北半球，清晨时分

．______was known to them all that William had broken his promise______ he would give each of them a gift.

A．As, which

B．What, that

C．It , that

D．It , which