61.  A crucial point about epidemics is that not all members of a given population behave in a uniform way.

62.  A culture defined by a government, a religion, or an economic system does not require geographical or racial isolation.

63.  A currency union can not exist without perfect capital mobility across the union and a fully integrated financial sector.

64.  A customary error committed by aquarists is to cling to the opinion that the Aponogeton species do not require a rich soil.

65.  A dark, intense, semi-smiling stare, as if the sprig of white heather was not charity but compulsory.

66.  A date for his release has not yet been agreed.

67.  A debate even begins about whether the army is not getting a little trigger-happy in its nervous and no doubt terrified tension.

68.  A deeper problem is that the ethics panel is a committee, not a committee.

69.  A difference between expressing admiration and giving credit is clear when we admire behavior which admiration will not affect.

70.  A difference in word form signals a difference in meaning, so two different forms can not carry the selfsame meaning.