托福考试

【单选题】（）, domesticated grapes grow in clusters, range in color from pale green to black, and contain sugar in varying quantities. 
A. Their botanical classification as berries 
B. Although their botanical classification as berries 
C. Because berries being their botanical classification 
D. Classified botanically as berries 

【单选题】 Bubbles, flaws, and other irregularities diffuse the light that passes through stained glass, （） the glass sparkle. 
A. which making 
B. and making 
C. making 
D. to making 

【单选题】Most of North America receives （） some form of continuous plant cover except in the arid and semiarid Southwest. 
A. moisture to sustain sufficient 
B. sufficient moisture to sustain 
C. to sustain sufficient moisture 
D. sufficient to sustain moisture 

【单选题】 Which of the following is NOT discussed as an ability animals are thought to have
A．( Selecting among choices
B．( Anticipating events to come
C．( Remembering past experiences
D．( Communicating emotions

【单选题】 Oxygen and nutrients reach the body's tissues __________ from the blood through the capillary wall.
A．( pass
B．( by passing
C．( to be passing
D．( have passed

【单选题】 The fiction writer, (poetry), and critic Edgar Allan Poe is among the (most familiar) of American(writers) and (one of)the most enigmatic.
A．poetry
B．most familiar
C．writers
D．one of