Passage　2
Whether　you　eat　to　live　or　live　to　eat,　food　should　help　keep　you　well.　In　our　modern　world　of　processed　and　preserved　foods,　many　nutritionists　(营养学家)　are　suggesting　that　we　can　stay　healthy　with　a　well-balanced　diet　of　plenty　of　fresh　fruits　and　vegetables　and　not　too　much　red　meat,　salt,　or　sugar.　In　fact,　eating　natural,　unprocessed　foods　that　are　made　from　scratch,　instead　of　artificial　and　junk　(假的)　foods,　may　not　only　keep　you　healthy,　but　save　your　money,　too.
To　stay　healthy,　you　must　also　be　careful　to　avoid　food　poisoning,　a　common,　unpleasant,　and　often　dangerous　illness　that　affects　one　out　of　every　six　Americans　each　year.　Food　poisoning　is　often　caused　by　salmonella　bacteria　(沙门化菌)　in　food,　especially　raw　meats　and　dairy　products.　Heat　usually　kills　the　bacteria,　and　refrigeration　keeps　them　from　growing.　So　remember　to　keep　hot　food　hot　and　cold　food　cold.　Also,　be　sure　to　keep　your　hands　and　cooking　utensils　clean　so　you　don't　transfer　germs　to　the　food　while　you　are　preparing　it.
If　you　use　canned　food,　always　check　the　cans　for　leaks　or　puffiness.　A　puffed　can　could　mean　botulism,　a　fatal　type　of　food　poisoning　that　you　cannot　see　or　smell.　Never　taste　any　food　that　you　suspect　has　spoiled.　Instead,　return　any　damaged　cans　or　spoiled　food　to　the　grocery　store,　and　the　manager　will　refund　(归还)　your　money.　When　using　processed　foods,　be　sure　to　read　all　the　labels　and　check　the　ingredients　and　the　freshness　date　before　you　buy　or　eat　the　food.
Eating　is　one　of　the　joys　of　life.　Being　careful　about　what　you　put　in　your　mouth　can　keep　it　that　way.
26.　According　to　most　nutritionists,　a　diet　of　_________　is　good　for　you.
○A.　red　meat　and　sweets
○B.　artificial　and　junk　foods
○C.　fresh　fruits　and　vegetables
○D.　processed　and　preserved　foods

27.　To　stay　healthy,　one　must　___________.
○A.　not　eat　unprocessed　meat　and　dairy　products
○B.　avoid　your　hands　touching　all　foods
○C.　not　taste　outdated　canned　food
○D.　heat　cold　food　before　eating

28.　If　a　can　is　puffy,　it　is　suggested　in　the　passage　to　___________.
○A.　open　it　and　taste　a　little　to　check　it
○B.　throw　it　away　to　avoid　poisoning　other　foods
○C.　heat　it　so　as　to　kill　the　bacteria
○D.　return　it　to　its　seller　for　repayment

29.　What　does　"it"　in　the　last　paragraph　refer　to?
○A.　Life.
○B.　Joy.
○C.　Eating.
○D.　Food.

30.　On　the　whole,　the　passage　strongly　suggests　that　_________.
○A.　natural　food　is　healthier　than　artificial　food
○B.　food　helps　keep　one　healthy
○C.　canned　food　may　be　poisoning
○D.　one's　poor　health　is　generally　a　result　of　food　poisoning