题目内容
Though the _________ dog seemed very quiet, I dared not _______ any movement.
A. frightened; to move B. frightening; to move
C. frighten; moving D. frightening; move
(2)飞船飞行期间,下列叙述正确的是……………………………………………………( )
A.地球绕日公转的速度逐渐减慢
B.太阳直射点向北运动
C.赤道各地日出时,当地物体影子朝向西偏北
D.南半球各地正午太阳高度角达一年中最大值

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