世界机器人的需求量近年来每()年将翻一番。
A.五
B.六
C.七
D.八
参考答案:A
下列结构中具有生命的是[ ]
A.脱氧核糖核酸(DNA)
B.生物大分子
C.独立的SARS病毒
D.人体的心肌细胞
______ was developed in the late 19th century as a reaction against the Grammar-Translation Method.
A. The Oral Approach B. The Audiolingual MethodC. The Direct Method D. The Cognitive Approach