单选题
单选题
A、
They don't think much of being healthy.
B、
They think regular exercise might improve their health.
C、
They think they could stay healthy without any exercise.
D、
They find outdoor activities benefit them most.
【正确答案】
C
【答案解析】
单选题
A、
Mental diseases.
B、
Sleep problems.
C、
High blood pressure.
D、
Heart problems.
【正确答案】
A
【答案解析】
单选题
A、
It helps train the lungs to work hard for a longer time.
B、
It helps increase the muscles' size and strength.
C、
It helps make the heart strong and work hard.
D、
It helps keep muscles long and supple.
【正确答案】
C
【答案解析】
单选题
A、
It can train the heart to work hard for a longer time.
B、
It can increase muscles' size and strength eventually.
C、
It can only help people get enormous and beautiful muscles.
D、
It can make back trouble completely disappear.
【正确答案】
B
【答案解析】
单选题
A、
It is just about any amount of physical activity that improves fitness.
B、
It is just anything that you need to exert yourself to do to bum calories.
C、
It means all forms of vigorous activities or deliberate workouts.
D、
It includes every exercise which keeps your muscles tight and strong.
【正确答案】
A
【答案解析】
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