(F) to allow carbon dioxide to enter and water to leave the plants
(G) to allow water to enter and carbon dioxide to leave the plants
(H) to allow oxygen to enter and carbon dioxide to leave the plants
(J) to allow sunlight to enter the plants
(K) to allow food to be absorbedWhich of the following best describes what is suggested by the statement that the tiny surface openings of desert
plants “serve both purposes” (line 23)?25.
(A) They cause the plant to shed its leaves or close them up.
(B) They enable the plant survive hot days and cool nights.
(C) They take in water and also secrete poison.
(D) They aid in photosynthesis but let out moisture.
(E) They secrete carbon dioxide and manufacture seeds.26. Which of the following weather conditions would most benefit plants with wide, shallow root systems?(F) a prolonged drought
(G) a windstorm
(H) a light spring rain
(J) a winter snowfall
(K) a flash floodAlchemy is the name given to the attempt to
change lead, copper, and other metals into silver or
gold. Today, alchemy is regarded as a pseudoscience.
Its associations with astrology and the occult suggest
( 5 ) primitive superstition to the modern mind, and the
alchemist is generally portrayed as a charlatan
obsessed by dreams of impossible wealth. For many
centuries, however, alchemy was a highly respected
art. In the search for the elusive secret to making gold,
( 10 )alchemists helped to develop many of the apparatuses
and procedures that are used in laboratories today.
Moreover, the results of their experiments laid the
basic conceptual framework of the modern science of
chemistry.