An active lifestyleand a healthy,fish-rich diet are not only good for your heart,________(46),twoleading neuroscientists said on Wednesday.

As people livelonger,finding ways of halting the decline in mental agility is becomingincreasingly important,said professor Ian Robertson，_________(47).

"The biggestthreat to being able to function well and properly is ourbrains,"___________(48).

"There is verystrong evidence,___________(49),that the degree to which you maintain yourmental faculties depends on a handful of quite simple environmentalfactors,"he

said.

__________(50),avoidedhigh stress levels and enjoyed a rich and varied social life are betterequipped to stay alert as they age.Mental stimulation,learning new things and

simply thinkingyoung also help.________（46）

[单选题]An active lifestyleand a healthy,fish-rich diet are not only good for your

[单选题]An active lifestyleand a healthy,fish-rich diet are not only good for your

[单选题]An active lifestyleand a healthy,fish-rich diet are not only good for your

[单选题]An active lifestyleand a healthy,fish-rich diet are not only good for your

[单选题]Since RAM is only active when the computer is on， your computer usesdisk to

[单选题]C．hildren who are not active or ___diet is high in fat will gain weight quickly.A． whatB． whoseC． whichD． that

[试题]C．ancerissecondonly__________heartdiseaseasacauseofdeath.A．)ofB)toC．)withD)from

[单选题] Since RAM is only active when the computer is on, your computer uses disto store information even when the computer is off. Which of the following itrue? （74）（74）A．When your computer is on, only RAM is used to store informationB．When your computer i

[单选题]Since RAM is only active when the computer is on, your computer uses disk to store information even when the computer is off. Which of the following is true?(74).A．When your computer is on, only RAM is used to store information.B．When your computer i

[单选题]If you [ignore]your diet,trouble will follow.A.disregardB.increaseC.breakD.