A.\({x^m}.{x^n} = {x^{m + n}}\)
B.\({\left( {xy} \right)^n} = {x^n}{y^n}\)
C.\({\left( {{x^n}} \right)^m} = {x^{n.m}}\)
D.\({x^m}.{y^n} = {\left( {xy} \right)^{m + n}}\)

A.\(\dfrac{{ - 7}}{3}\)
B.\(\dfrac{2}{3}\)
C.\(\dfrac{5}{3}\)
D.\(4\)

A.\(1\)
B.\(2\)
C.\(0\)
D.\(3\)

A.\(6\)
B.\(8\)
C.\(9\)
D.\(5\)

A.Young people do not seem to bother themselves with memorizing factual information.
B.General knowledge tends to have been mainly acquired through formal schooling.
C.On being offered the gift of writing, the king of Egypt was hopeful about its potential.
D.The majority of undergraduates are reluctant to look for answers to factual questions online.

A.ease
B.promote
C.cause
D.limit

A.amount
B.figure
C.number
D.total

A.A City Survey with a Difference
B.Websites about Best and Worst Cities
C.Ways to Carry Out a Questionnaire
D.Citizens’ Opinions of Their Own City

A.A City Survey with a Difference
B.Websites about Best and Worst Cities
C.Ways to Carry Out a Questionnaire
D.Citizens’ Opinions of Their Own City

A.surveys
B.people
C.cities
D.countries