Reading passages

48- The passage tells us that, while a boy is learning how to use a new bicycle ............. . 
A) he may crash into quite a few trees 
B) he won‘t develop any creative interests 
C) it will be impossible for him to turn corners 
D) it will absorb all his available time 
E) he‘ll only use it if he needs to go somewhere 
How many people can the earth hold? Will birth and death rates continue to bend downward? Can 
food production keep pace with population growth? Can technology supplement or replace today‘s 
resources? What are the long-term effects of population on well-being, climate, and farm production? 
Debate over such issues has spawned many volumes, as scholars look to the future with varying 
degrees of optimism and gloom. In the oration called ― The Terror of Change‖ , Patricia Gulas 
Strauch cited three aspects of our future about which there is still disagreement: The speed of change 
will accelerate, the world will be increasingly intricate, and nations and world issues will be 
increasingly interrelated. Today‘s problems, facing Third World megacities in particular ,cannot be 
ignored by developed countries. We cannot look to the past for resolutions, there is no precedent for 
such growth. We are in uncharted, challenging waters. 
49- The points put forward in the lecture ― The Terror of Change‖ ............. . 
A) are, for the most part, accepted 
B) have changed scholars from a sense of optimism to one of gloom 
C) hadn‘t been considered by scholars previously 
D) caused much debate and disagreement 
E) filled several volumes 
50- According to the writer, having no equivalents in the past, ............ . 
A) analyses formulated by experts are open to discussion 
B) books on the world‘s problems cause a great deal of debate 
C) Their World megacities are not sufficiently aided 
D) Modern technological developments do not meet the needs of the people 
E) today‘s problems require new solutions