问题
选择题
Pine trees, of which there are almost one hundred ____, are found throughout the North Temperate Zone.
A．species
B．samples
C．specimens
D．Standards
答案
答案：A
词义辨析。 A. 物种；种类 B. 样品 C. 式样；样本 D. 标准；规格。句意：在北温带发现将近有100种松树。这里是指植物的物种，故选A。