“除数是小数的除法”，某老师把学生回答的分12个馒头的计算板书出来：12÷３=4(人
题型：单项选择题
问题：
“除数是小数的除法”，某老师把学生回答的分12个馒头的计算板书出来：12÷３=4(人)，12÷2=6(人)，12÷1=12(人)，12÷0.5=24(人)，这一做法体现了()。
A． 巩固性原则
B．直观性原则
C．理论联系实际原则
D．因材施教原则
题型：单项选择题
After moving to the United States, immigrant group
s trying to fit in tend to choose high calorie fatty foods in an attempt to appear more American，a new study finds．That's one reason why immigrants approach US levels of obesity within 15 years of moving to America．
The researchers also did an experiment that measured whether or not the threat of appearing un-American influenced respond
ents' food choices．After being questioned about their ability to speak English，75 perce
nt of Asian-Americans identified a typical American food as their favorite. Only 25 percent of Asian-Americans who had not been asked if they spoke English did the same.
When their American identity was called into question during a follow-up study, Asian-American participants also tended to choose typical American dishes，such as hamburgers and cheese sandwiches．In that experiment, 55 Asian-Americans were asked to choose a meal from a local Asian or American restaurant. Some participants were told that only Americans could participate in the study. Those who chose the more typical American fare ended up consuming an extra 182 calories，including 12 grams of fat and 7 grams of saturated fat（饱和脂肪）.
"People who feel like they need to prove they belong to a culture will change their habits in an attempt to fit in，"said Sauna Cheryan，an author of the study and assistant professor of psychology at the University of Washington." If immigrants and their children choose unhealthy American foods over healthier traditional foods across their lives，this process of fitting in could lead to poorer health." Cheryan added．
Social pressures，the study concluded, are at the heart of the problem．"In American society today, being American is associated with being white．Americans，who don't fit this image even if they were born here and speak English，feel that pressure to prove that they're American," said Cheryan．
小题1:The author wants to show that __________.
A．more and more Asians enjoy high-calorie snacks
B．immigrants tend to eat American junk food to fit in
C．most Americans are at the risk of heart disease
D．all the American people have a bad eating habit小题2:According to the survey, __________.
A．Asian-Americans care less about their health
B．25 percent of Americans like junk food
C．choosing food is related to Asian-Americans' situation
D．immigrants are forced to eat junk food小题3:The underlined word "fare" in Paragraph 4 most probably means" __________".
A．food offered as a meal
B．a person taking a taxi
C．money spent on food
D．an arranged thing to do小题4:According to Sauna Cheryan, __________.
A．what immigrants have done is ridiculous
B．American traditional foods are healthier
C．immigrants risk their health in order to fit in
D．American culture affects immigrants deeply小题5:Which of the following should take the blame for the bad eating habit?
A．The situation of employment.
B．The traditional culture.
C．The American government.
D．The pressures from society.