单项选择题

A．Because his watch has stopped.
B．Because his watch is slow.
C．Because his watch is fast.
D．Because his watch is lost.
<上一题 目录 下一题>
热门 试题

单项选择题
A．The Rhythmic Cycle of the Sun and the TideB．Discoveries in BiologyC．A Scientific StudyD．A Living Clock
A．The Rhythmic Cycle of the Sun and the Tide
B．Discoveries in Biology
C．A Scientific Study
D．A Living Clock
单项选择题
One of the major difficulties of research into human health problems is the difficulty of ______.
A．knowing how many factors there are
B．isolating particular, individual factors from the complex human environment
C．knowing the complex human environment
D．increasing the number of the competent physicians
相关试题