1.Saccharin(糖精),asweeteningagentthatishundredsoftimessweeterthanordinarycanesugar,isapopularsugarsubstitute.
(A)enhancer(B)replacement(C)catalyst
2.Whenlightentersacamera,itstrikesthefilm,whosesurfacereactstothelight.
(A)filtersthrough(B)makescontactwith(C)damages
3.Permeablerockshaveporesofsufficientsizetopermitwatertopassthroughthem.
(A)fluctuating(B)enlarged(C)adequate
4.Sometheoristssuggestthatmodernsocietyproducesmorestressthandidearlierperiodsofhumanlife.
(A)tension(B)accents(C)trends
5.Ourteacherstimulatedustostudyhard.
(A)simulated(B)faked(C)encouraged
6.UnitedStatesNavyAdmiralAlfredMahanwrotemanybooksonnavalstrategyandseapower.
(A)tactics(B)history(C)battles
7.ManyofEdithWharton’sbeststorieswerecompletedundergreatpersonalstrain.
(A)poverty(B)privacy(C)tension
8.Childrenwhoareprovidedwithpositivefeedbackforaggressivenesswillincorporatethiskindofconductintotheirstockofbehaviors.
(A)reserve(B)understanding(C)bond