单项选择题

The passage suggests that the author's heat-pump system absorbs heat from ______

A．soil in a nearby field
B．sun panels at ground level
C．a pipe buried next to the walls
D．a tank of propylene-glycol
<上一题 目录 下一题>
热门 试题

单项选择题
According to the passage, which of the following statements is TRUE
A．I had never mingled with tramps and beggars in my life.
B．I first became aware of the unemployment problem in 1938.
C．Young miners and cotton workers had been brought up to work.
D．Young miners could all find work if they wanted to.
单项选择题
The passage suggests that about a quarter of the tramps and beggars the author met were______
A．cynical parasites
B．like animals in a trap
C．once good at mining
D．young people
相关试题