单项选择题

The passage deals mainly with ______.

A．automobiles
B．transportation
C．roads
D．vehicles
<上一题 目录 下一题>
热门 试题

单项选择题
The main idea of the first paragraph is that ______.
A．people traveled on lakes thousands of years ago
B．people used logs thousands of years ago
C．traveling was hard thousands of years ago
D．there were no roads and cars thousands of years ago
单项选择题
By his outdoor cousins the author means ______.
A．other experimenters
B．B ) the other doves of the same brood
C．doves under the natural sky
D．other birds in general
相关试题