Insect pests are among the leading causes of crop failure.
A、expectedB
暂无解析
Foodmustbemoistinordertohaveataste.
Withlasersscientistscanprobemanyphysicalprocesses,suchascombustion,oncebeyondourken.视野
In1974HenryAaronbrokeBabeRuth'smonumentallifetimerecordof714homeruns.
Thewheelsofthefirstroadvehicleswerefashionedfromcrudestonedisks.
Themegaphone(microphone)makesthevoicesoundlouderbecauseitpointssoundwavesinonedirectionandkeepsthemfromspreadingoutinalldirections.
