该选哪个?为什么?The weather can influence(影响)intelligence(智力).For e

该选哪个?为什么?
The weather can influence(影响)intelligence(智力).For example,in a 1983 report by scientists,IQ of group of students was very high when a very strong wind came,but after the strong wind,their IQ was 10% lower.The wind can help people have more intelligence.
Very hot weather,on the other hand,can make it lower.Students in many schools of the United States often get worse on exams in the hot months of the year(July and August).
Weather also has a strong influence on people’s feelings.Winter may be a bad time for thin people.They usually feel cold during these months.They might feel unhappy during cold weather.But fat people may have a hard time in hot weather.At
about 18 °C,people become stronger.
Lower air pressure may make people forgetful.People leave more bags on buses and in shops on low-pressure days.People feel best at a temperature of about 18 °C.
Are you feeling sad,tired,forgetful or unhappy today?It may be the weather’s problem.
( )79.At a temperature of about 18 °C.people may_________.
A.leave more bags on buses B.like to go shopping C.remember things better D.feel unhappy