单项选择题

Cardiovascular exercise helps ______.

A．one to work more efficiently
B．to promote a strong heart
C．to lose weight
D．one to sleep better
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单项选择题
The monument was dedicated to ______ in the Second World War.
A．4,000 American heroes killed
B．all American soldiers killed
C．all Americans who took part
D．all the soldiers who fought in the Pacific or the Atlantic theatre
单项选择题
If one does not work out regularly, he may ______.
A．easily catch a cold
B．easily get tired
C．easily get anxious
D．feel depressed
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