51.
Pakistan has been vigorously pursuing a clandestine nuclear weapons programme.

52.
Most of the politicians these days have a large number of toadies around them.

53.
The bounties of nature are being exploited by man.

54.
Scientific knowledge is an intoxicating draught, and it may be one in which the human race is unable to sustain.

55.
The Director leaves on Tuesday on tour of the overseas branches of the company.