- P(gun)]
xиԇ`^(q)
иԇ`^(q)xиԇܶԵľx?yn)ڸNӢZ(y)ԇ^У^˕(hu)XxԼď(qing)(xing)Ȼ@NJ(rn)֪һ(zhn)_u|Ӗ(xn)n̮(dng)l(f)F(xin)@ӵČW(xu)TJ(rn)xe(cu)(sh)H(li)ķ?jn)?sh)ֻ22?x)ETS(du)xˮƽ(High level)u(png)(bio)(zhn)2230(sh)x_(d)25ϣҪ^ٕ(hu)^y?yn)@ஔ(dng)ڰђֵĉD(zhun)Ƶ˴˱^ Z(y)ɴ˿Ҋxȡø߷(du)ګ@ðٷϵиɿ(j)һNC!
ôʲôܶJ(rn)xe(cu)Ŀһ@һx @?yn)иxԇһЩOR
ORһ(x)(ji)}龫_λ
иxеļ(x)(ji)}䌍(sh)yǰǶλc(din)Ҫ(du)@(g)}
Two species of deer have been prevalent in the Puget Sound area of Washington State in the Pacific Northwest of the United States. The black-tailed deer, a lowland, west-side cousin of the mule deer of eastern Washington, is now the most common. The other species, the Columbian white-tailed deer, in earlier times was common in the open prairie country, it is now restricted to the low, marshy islands and flood plains along the lower Columbia River.
According to paragraph 1, which of the following is true of the white-tailed deer of Puget Sound
A. It is native to lowlands and marshes.
B. It is more closely related to the mule deer of eastern Washington than to other types of deer.
C. It has replaced the black-tailed deer in the open prairie.
D. It no longer lives in a particular type of habitat that it once occupied.
@һ(g)͵ļ(x)(ji)}ԓ}}еĿ(hu)xPuget SoundP(gun)I~ԭĶλ?yn)nj~Е(hu)^@ۡһx@(g)(sh)ؕ(hu)λԓεĵһԒи(x)(ji)}ǶλľľҴ𰸣@ӵԒx_𰸵?yn)鶨λ_䌍(sh)_P(gun)I~(yng)ԓwhite-tailed deer@(g)BַBӵ~ҲDZ^Ŀԓ~λ(yng)ԓһԒԸ(j)˼(yng)ԓxD(xing)A(xing)cԭ˼BCcλϢo(w)P(gun)҂?c)ف?li)һ(g)(sh)(x)(ji)}ӣ
Plant communities assemble themselves flexibly, and their structure depends on the particular history of the area. Ecologists use the term succession to refer to the changes that happen in plant communities and ecosystems over time. The first community in a succession is called a pioneer community, while the long-lived community at the end of succession is called a climax community. Pioneer and successional plant communities are said to change over periods from 1 to 500 years. These changesin plant numbers and the mix of speciesare cumulative. Climax communities themselves change but over periods of time greater than about 500 years.
According to paragraph 1, which of the following is NOT true of climax communities
A. They occur at the end of a succession.
B. They last longer than any other type of community.
C. The numbers of plants in them and the mix of species do not change
D. They remain stable for at least 500 years at a time.
@(g)}Ҷ(hu)xclimax communitiesȥλڶλ^Е(hu)F(xin)ܶ}ȿҪW(xu)(hu)Sʽλ(j)Ę(bio)c(din)̖(ho)ԼĿ~(li)҂ҪP(gun)I~еparticularǼӰsuccession̖(ho)ģdzĿͨ^@ɂ(g)~҂(hu)l(f)F(xin)]҂ҪĖ|;ٱ^ͻľǔ(sh)ּ̖(ho)500Ϸa climax communitydžΔ(sh)c}P(gun)I~ȫƥ䣬(x)(ji)}vǾ_λ҂(yng)ԓx500б·Climax communitiesԓεһԒ(sh)(x)(ji)}ij}˼·ЃɷNһǟo(w)(j)λc(din)ă(ni)Ă(g)x(xing)ֻһ(g)]ᵽ@N˼·mx(xing)^(jin)̵}Ŀ;Ǐ(j)λc(din)ă(ni)ݱֻһ(g)x(xing)c֮ì@N˼·m(yng)x(xing)^L(zhng)}Ŀ@(g)}(j)λһԒıρ(li)fP(gun)ֻCDɂ(g)x(xing)D(xing)˼cԭC(xing)cԭì_CCиxļ(x)(ji)}Ҫһc(din)ҪMȥ_λ
ORo(w)[ط
иxԇн^}Ŀnj(du)(yng)w@(hu)鿼(ji)ʡܶr(sh)gҲų}Ŀķ^^ģڌҴ𰸕r(sh)yһ^FˮM(fi)r(sh)M(fi)䌍(sh)@Щƛ]_λ}ĿǰC(j)҂́(li)һ(g)ӣ
Wind power has a significant cost advantage over nuclear power and has become competitive with coal-fired power plants in many places. With new technological advances and mass production, projected cost declines should make wind power one of the worlds cheapest ways to produce electricity. In the long run, electricity from large wind farms in remote areas might be used to make hydrogen gas from water during periods when there is less than peak demand for electricity. The hydrogen gas could then be fed into a storage system and used to generate electricity when additional or backup power is needed.
Wind power is most economical in areas with steady winds. In areas where the wind dies down, backup electricity from a utility company or from an energy storage system becomes necessary. Backup power could also be provided by linking wind farms with a solar cell, with conventional or pumped-storage hydropower, or with efficient natural-gas-burning turbines. Some drawbacks to wind farms include visual pollution and noise, although these can be overcome by improving their design and locating them in isolated areas.
Based on the information in paragraph 3 and paragraph 4, what can be inferred about the states of North Dakota, South Dakota, and Texas mentioned at the end of paragraph 1
A.They rely largely on coal-fired power plants.
B.They contain remote areas where the winds rarely die down.
C.Over 1 percent of the electricity in these states is produced by wind farms.
D.Wind farms in these states are being expanded to meet the power needs of the United States.
@(g)}Ŀ}漰(g)䣬(sh)ϿҪȥһεă(ni)?yn)?j)ǵĶεϢ@ɂ(g)Ԓ(ni)Ҳ٣đ(yng)ԇĽǶȁ(li)f̫M(fi)r(sh)g_(yng)ԓǏx(xing)ھһ·A(xing)һ㶼(hu)xBַcoal-firedP(gun)I~ȥλB(xing)]б^@۵~ֻx~Z(y)remote areasC(xing)x1 percent D(xing)xthe United StatesxP(gun)I~҂yl(f)F(xin)B(xing)öλ⣬(g)x(xing)P(gun)I~Ŀ(jng)^λA(xing)(yng)ԓȥȌ(du)3εĵһԒ˼@ì;B(xing)ңԕ^;C(xing)D(xing)P(gun)I~@ɶζҲ@͌иx}e(cu)`O(sh)Ӌ(j)֮һ o(w)mȻ҂]ȥ(yn)CB(xing)fǷ_(jng)^ųҲֻxB@ӵ}͕(hu)ʡr(sh)ʡҴҲ_ڿԇУ@Nr(hu)Ӱ푿M(jn)Ӱˮƽİl(f)]ֻҪ҂˽ETS}·ܰpɸ㶨
(chng)(zhn)(chng)ֻ֪֪˷ّܰ(zhn)ل˽ETSO(sh)Ӌ(j)}Ŀr(sh)ʹõġOR҂ͿԺܺõ°빦
ôʲôܶJ(rn)xe(cu)Ŀһ@һx @?yn)иxԇһЩOR
ORһ(x)(ji)}龫_λ
иxеļ(x)(ji)}䌍(sh)yǰǶλc(din)Ҫ(du)@(g)}
Two species of deer have been prevalent in the Puget Sound area of Washington State in the Pacific Northwest of the United States. The black-tailed deer, a lowland, west-side cousin of the mule deer of eastern Washington, is now the most common. The other species, the Columbian white-tailed deer, in earlier times was common in the open prairie country, it is now restricted to the low, marshy islands and flood plains along the lower Columbia River.
According to paragraph 1, which of the following is true of the white-tailed deer of Puget Sound
A. It is native to lowlands and marshes.
B. It is more closely related to the mule deer of eastern Washington than to other types of deer.
C. It has replaced the black-tailed deer in the open prairie.
D. It no longer lives in a particular type of habitat that it once occupied.
@һ(g)͵ļ(x)(ji)}ԓ}}УеĿ(hu)xPuget SoundP(gun)I~ԭĶλ?yn)nj~Е(hu)^@һx@(g)(sh)ؕ(hu)λԓεĵһԒи(x)(ji)}ǶλľľҴ@ӵԒx_𰸵?yn)鶨λ_䌍(sh)_P(gun)I~(yng)ԓwhite-tailed deer@(g)BַBӵ~ҲDZ^Ŀԓ~λ(yng)ԓһԒԸ(j)˼(yng)ԓxD(xing)A(xing)cԭ˼BCcλϢo(w)P(gun)҂?c)ف?li)һ(g)(sh)(x)(ji)}ӣ
Plant communities assemble themselves flexibly, and their structure depends on the particular history of the area. Ecologists use the term succession to refer to the changes that happen in plant communities and ecosystems over time. The first community in a succession is called a pioneer community, while the long-lived community at the end of succession is called a climax community. Pioneer and successional plant communities are said to change over periods from 1 to 500 years. These changesin plant numbers and the mix of speciesare cumulative. Climax communities themselves change but over periods of time greater than about 500 years.
According to paragraph 1, which of the following is NOT true of climax communities
A. They occur at the end of a succession.
B. They last longer than any other type of community.
C. The numbers of plants in them and the mix of species do not change
D. They remain stable for at least 500 years at a time.
@(g)}Ҷ(hu)xclimax communitiesȥλڶλ^Е(hu)F(xin)ܶ}ȿҪW(xu)(hu)Sʽλ(j)Ę(bio)c(din)̖(ho)ԼĿ~(li)҂ҪP(gun)I~еparticularǼӰsuccession̖(ho)dzĿͨ^@ɂ(g)~҂(hu)l(f)F(xin)]҂ҪĖ|;ٱ^ͻľǔ(sh)ּ̖(ho)500Ϸa climax communitydžΔ(sh)c}P(gun)I~ȫƥ䣬(x)(ji)}vǾ_λ҂(yng)ԓx500б·Climax communitiesԓεһԒ(sh)(x)(ji)}ij}˼·ЃɷNһǟo(w)(j)λc(din)ă(ni)Ă(g)x(xing)ֻһ(g)]ᵽ@N˼·mx(xing)^(jin)̵}Ŀ;Ǐ(j)λc(din)ă(ni)ݱֻһ(g)x(xing)c֮ìܣ@N˼·m(yng)x(xing)^L(zhng)}Ŀ@(g)}(j)λһԒıρ(li)fP(gun)ֻCDɂ(g)x(xing)D(xing)˼cԭC(xing)cԭìܣ_CCиxļ(x)(ji)}Ҫһc(din)ҪMȥ_λ
ORo(w)[ط
иxԇн^}Ŀnj(du)(yng)wģ@(hu)鿼(ji)ʡܶr(sh)gҲų}Ŀķ^^ģڌҴ𰸕r(sh)yһ^FˮM(fi)r(sh)M(fi)䌍(sh)@Щƛ]_λ}ĿǰC(j)҂́(li)һ(g)ӣ
Wind power has a significant cost advantage over nuclear power and has become competitive with coal-fired power plants in many places. With new technological advances and mass production, projected cost declines should make wind power one of the worlds cheapest ways to produce electricity. In the long run, electricity from large wind farms in remote areas might be used to make hydrogen gas from water during periods when there is less than peak demand for electricity. The hydrogen gas could then be fed into a storage system and used to generate electricity when additional or backup power is needed.
Wind power is most economical in areas with steady winds. In areas where the wind dies down, backup electricity from a utility company or from an energy storage system becomes necessary. Backup power could also be provided by linking wind farms with a solar cell, with conventional or pumped-storage hydropower, or with efficient natural-gas-burning turbines. Some drawbacks to wind farms include visual pollution and noise, although these can be overcome by improving their design and locating them in isolated areas.
Based on the information in paragraph 3 and paragraph 4, what can be inferred about the states of North Dakota, South Dakota, and Texas mentioned at the end of paragraph 1
A.They rely largely on coal-fired power plants.
B.They contain remote areas where the winds rarely die down.
C.Over 1 percent of the electricity in these states is produced by wind farms.
D.Wind farms in these states are being expanded to meet the power needs of the United States.
@(g)}Ŀ}漰(g)(sh)ϿҪȥһεă(ni)ݣ?yn)?j)ǵĶεϢ@ɂ(g)Ԓ(ni)Ҳđ(yng)ԇĽǶȁ(li)f̫M(fi)r(sh)g_(yng)ԓǏx(xing)ھһ·A(xing)һ㶼(hu)xBַcoal-firedP(gun)I~ȥλB(xing)]б^@۵~ֻx~Z(y)remote areasC(xing)x1 percent D(xing)xthe United StatesxP(gun)I~҂yl(f)F(xin)B(xing)öλ(g)x(xing)P(gun)I~Ŀ(jng)^λA(xing)(yng)ԓȥȌ(du)3εĵһԒ˼@ì;B(xing)ңԕ^;C(xing)D(xing)P(gun)I~@ɶζҲ@͌иx}e(cu)`O(sh)Ӌ(j)֮һ o(w)mȻ҂]ȥ(yn)CB(xing)fǷ_(jng)^ųҲֻxB@ӵ}͕(hu)ʡr(sh)ʡҴҲ_ڿԇ@Nr(hu)Ӱ푿M(jn)Ӱˮƽİl(f)]ֻҪ҂˽ETS}·ܰpɸ㶨
(chng)(zhn)(chng)ֻ֪֪˷ّܰ(zhn)ل˽ETSO(sh)Ӌ(j)}Ŀr(sh)ʹõġOR҂ͿԺܺõ°빦
xиԇ`^(q)P(gun)£
иԇ~R10-22
иԇZ(y)}10-28
иԇ?q)~10-22
иԇ俼~R10-22
fиԇ(du)06-06
иԇ~Rӛ10-22
иԇ~RЩ10-22
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