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ain __ (84) __ whether the ship is making five knots, 15 knots or 25 knots¡¢ So __(85) __ he looks hard at the sea it will be __(86)__ for him to know how fast his ship is moving or indeed if it is moving at all¡¢ Of course, if the sea should get rough or the ship changes course suddenly,__ (87)__ he will sense his state of motion¡¢ But even supposing that we have the idealized conditions of a glass calm sea and a silent ship, nothing that happens below decks ¡ª no amount of observation or mechanical experiment performed inside the ship ¡ª will reveal its velocity through the sea¡¢ The physical__ (88)__ based on these facts was formulated by Newton in 1687. ¡°The motions of bodies included in a given space¡±, he wrote, ¡°are the same __(89¡¢ __themselves, whether that space is at rest or moves uniformly__ (90)__in a s traight line.¡±

71 A¡¢passes B¡¢goes C¡¢flashes D¡¢moves

72 A¡¢different B¡¢opposite C¡¢unlike D¡¢diverse

73 A¡¢noiseless B¡¢motionless C¡¢calmness D¡¢ movingly

74 A¡¢At all times B¡¢All the while ª¤C¡¢At all time D¡¢ Once in a while

75 A¡¢so B¡¢very C¡¢ much D¡¢as

76 A¡¢ whenever B¡¢ wherever C¡¢ whatever D¡¢whichever

77 A¡¢ watch you B¡¢ mark out C¡¢ look out D¡¢ view

78 A¡¢ which B¡¢ what C¡¢ that D¡¢ if

79 A¡¢ and B¡¢ but C¡¢ or D¡¢ nor

80 A¡¢ condition B¡¢ position C¡¢ situation D¡¢ state

81 A¡¢ like B¡¢ love C¡¢ devote D¡¢ attach

82 A¡¢ fond of B¡¢ aware of C¡¢ keen on D¡¢ interested in

83 A¡¢ easily B¡¢ comfortably C¡¢ reliably D¡¢ vigorously

84 A¡¢ unruffled B¡¢ uneven C¡¢ unstable D¡¢ uncertain

85 A¡¢ when B¡¢ while C¡¢ unless D¡¢ since

86 A¡¢ possible B¡¢ probable C¡¢ impassible D¡¢ impossible

87 A¡¢ that B¡¢ then C¡¢ and D¡¢ after

88 A¡¢ reason B¡¢ standard C¡¢ principle D¡¢ formula

89 A¡¢ at B¡¢ to C¡¢ among D¡¢ during

90 A¡¢ forward B¡¢ awkward C¡¢ rearward D¡¢ coward

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