单项选择题A.teen pregnancy and difficulty in school.B.low self esteem and poor nutrition.C.difficulty in school and physical abuse.D.illiteracy and teen pregnancy.
单项选择题A.shortage of days.B.superstition.C.inability to divide the year.D.too many months.
单项选择题A.it’s too spicy.B.it’s too salty.C.it’s too bland.D.it’s too sour.
单项选择题A.swim in public pools.B.give blood.C.over exert yourself.D.expose your skin to the sun.
单项选择题A.K10-15.B.K20-24.C.E10-12.D.F1-3.