四六级考试

【单选题】 What is the main idea of the passage
A．Human ancestors became predominantly right- handed when they began to use tools.
B．It is difficult to interpret the significance of anthropological evidence concerning tool use.
C．Human and their ancestors have been predominantly right - handed for over a million years.
D．Human ancestors were more skilled at using both hands than modern humans.

网考网参考答案：C
网考网解析：
[试题分析] 本题考查学生总体把握文中主要内容的能力。 [详细解答]从第三段的Anthropological evidence pushes the record of handedness nearly human ancestors back to at east 1.4 million years ago．和后面以工具制造为证据这一方面可说明，人类主要是采用右手，人类使用右手已经有一百多万年的历史，所以答案为C。 查看试题解析出处>>