锟竭匡拷英锟絑(y锟斤拷)锟斤拷x锟斤拷锟解考锟絚(di锟斤拷n)

锟斤拷锟斤拷锟斤拷.锟斤拷x锟斤拷锟斤拷锟絵锟斤拷锟斤拷

锟斤拷锟斤拷一锟斤拷锟饺匡拷锟絵锟缴ｏ拷锟斤拷锟斤拷锟斤拷(w锟斤拷n)锟絵锟絰锟斤拷锟斤拷锟斤拷

锟斤拷锟斤拷锟斤拷锟饺匡拷試锟絵锟斤拷锟斤拷锟絰锟斤拷锟铰★拷锟斤拷x锟絵锟斤拷锟斤拷锟斤拷锟斤拷要锟斤拷锟秸嗭拷(w锟斤拷n)锟絵锟斤拷锟�(l锟斤拷i)锟酵ｏ拷锟斤拷锟斤拷锟角匡拷锟絕锟斤拷息锟絵還锟斤拷锟斤拷锟絕锟叫旓拷锟絵锟斤拷锟斤拷锟�锟斤拷锟剿斤拷試锟絵锟絵锟斤拷锟皆硷拷锟斤拷锟斤拷(g锟斤拷)锟絰锟�(xi锟斤拷ng)锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷息锟斤拷然锟斤拷锟斤拷針岋拷(du锟斤拷)锟皆地岋拷(du锟斤拷)锟斤拷锟斤拷锟組(j锟斤拷n)锟叫掞拷锟絰锟斤拷锟斤拷(du锟斤拷)锟斤拷锟絇(gu锟斤拷n)锟斤拷息锟組(j锟斤拷n)锟叫匡拷锟劫讹拷位锟斤拷锟劫岋拷锟斤拷锟絇(gu锟斤拷n)锟斤拷息锟組(j锟斤拷n)锟斤拷锟斤拷锟较★拷锟斤拷e锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷(du锟斤拷)锟饺ｏ拷锟叫革拷锟叫擄拷(j锟斤拷)锟斤拷锟脚筹拷锟缴擾锟�(xi锟斤拷ng)锟斤拷锟絰锟斤拷锟斤拷锟絖锟金案★拷

锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟絰全锟侥ｏ拷锟剿斤拷锟斤拷锟街�锟斤拷锟絵锟斤拷

锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷母呖锟斤拷锟絰锟劫度达拷s锟斤拷每锟斤拷锟�40锟絶锟斤拷锟揭★拷锟斤拷锟斤拷锟绞�锟斤拷锟斤拷锟睫的時(sh锟斤拷)锟絞锟斤拷(n锟斤拷i)锟絓(y锟斤拷n)锟斤拷锟斤拷锟絰锟斤拷锟斤拷锟絰锟斤拷锟斤拷锟絰锟饺硷拷锟缴匡拷锟斤拷锟窖岋拷锟絇(gu锟斤拷n)锟絀锟絶锟斤拷锟斤拷锟絵锟斤拷锟斤拷锟斤拷捉锟絩(sh锟斤拷)锟斤拷锟斤拷锟斤拷锟�锟斤拷锟介節(ji锟斤拷)锟斤拷锟斤拷锟斤拷锟斤拷锟絕锟絚(di锟斤拷n)锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟絵锟絡(lu锟斤拷)锟斤拷锟斤拷锟斤拷锟絑(y锟斤拷)篇锟斤拷(sh锟斤拷)锟絴(zh锟斤拷)锟斤拷锟斤拷锟絰全锟侥岋拷(du锟斤拷)锟斤拷锟斤拷旨锟斤拷锟斤拷锟絵锟侥斤拷Q锟斤拷锟斤拷锟斤拷效锟斤拷锟杰匡拷锟斤拷抓住锟斤拷锟斤拷锟斤拷锟絖锟斤拷锟矫达拷锟斤拷

锟斤拷锟斤拷锟斤拷锟斤拷詳锟絰锟斤拷(x锟斤拷)锟斤拷(ji锟斤拷)锟斤拷锟斤拷锟�?bi锟斤拷o)锟铰凤拷c锟斤拷锟斤拷锟絵锟絡(lu锟斤拷)锟斤拷

锟斤拷锟斤拷锟斤拷锟铰絕锟斤拷锟角伙拷锟斤拷锟斤拷傻木锟斤拷拥亩锟斤拷锟斤拷锟斤拷锟斤拷邽锟斤拷锟�锟斤拷锟斤拷锟絵锟斤拷循锟斤拷锟斤拷記锟斤拷锟侥讹拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷模锟斤拷詴r(sh锟斤拷)锟絞锟斤拷锟斤拷g锟介線锟斤拷锟斤拷锟斤拷锟铰硷拷锟侥發(f锟斤拷)锟斤拷锟斤拷锟絣(f锟斤拷)展锟斤拷锟結(ji锟斤拷)锟斤拷展锟絖(k锟斤拷i)锟斤拷锟斤拷锟斤拷锟絟論锟侥則锟斤拷锟斤拷論锟絚(di锟斤拷n)锟斤拷論锟斤拷(j锟斤拷)锟斤拷锟結(ji锟斤拷)論锟斤拷锟斤拷要锟斤拷锟斤拷通锟絕(gu锟斤拷)锟斤拷釋★拷锟絜锟斤拷锟斤拷(l锟斤拷i)锟経锟斤拷锟絕锟絚(di锟斤拷n)锟斤拷

锟斤拷锟斤拷锟斤拷锟斤拷邏輯锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷}锟斤拷

锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟揭�锟斤拷锟斤拷锟絯锟絳锟斤拷锟斤拷锟絵(锟斤拷锟斤拷思锟斤拷锟斤拷锟接橈拷(bi锟斤拷o)锟絵锟斤拷)锟斤拷锟斤拷锟斤拷锟叫旓拷锟絵锟斤拷锟斤拷锟斤拷x锟斤拷锟斤拷锟叫碉拷锟統锟絚(di锟斤拷n)锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟揭伙拷N锟斤拷(chu锟斤拷ng)锟斤拷锟皆碉拷思锟絊锟斤拷锟�(d锟斤拷ng)锟斤拷锟斤拷锟斤拷锟斤拷覍锟�(sh锟斤拷)锟斤拷原锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟结供锟斤拷锟铰岋拷(sh锟斤拷)锟酵撅拷锟斤拷锟斤拷锟斤拷锟斤拷(j锟斤拷)锟斤拷锟斤拷锟斤拷锟斤拷知锟狡旓拷未知锟斤拷锟斤拷锟杰憑锟斤拷锟斤拷锟斤拷锟斤拷锟絊锟解揣锟統(c锟斤拷)锟斤拷锟絰锟斤拷要锟斤拷(du锟斤拷)锟斤拷锟街的憋拷锟斤拷锟斤拷息锟組(j锟斤拷n)锟叫凤拷锟斤拷锟斤拷锟节撅拷锟竭壿嬶拷锟斤拷锟�锟斤拷锟斤拷锟杰撅拷锟斤拷論锟斤拷锟斤拷锟斤拷偏锟斤拷全锟斤拷锟斤拷锟斤拷锟絵锟斤拷锟结問(w锟斤拷n)锟叫筹拷锟矫碉拷锟絶锟叫ｏ拷conclude锟斤拷infer锟斤拷imply锟斤拷suggest锟斤拷indicate锟斤拷锟斤拷

锟斤拷锟斤拷锟藉、锟斤拷锟絶锟斤拷锟絰锟斤拷锟竭筹拷锟斤拷x锟絩路锟斤拷锟斤拷

锟斤拷锟斤拷锟斤拷锟絶锟角戯拷(y锟斤拷ng)锟斤拷英锟絑(y锟斤拷)锟斤拷x锟斤拷锟斤拷要锟斤拷锟斤拷锟斤拷也锟角高匡拷锟叫筹拷锟矫碉拷锟絵锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷要锟斤拷(zh锟斤拷n)锟絖锟給(w锟斤拷)锟絗锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷要锟斤拷锟絕锟斤拷姆锟斤拷x锟斤拷锟斤拷锟斤拷锟秸伙拷锟絁(r锟斤拷n)锟絉(sh锟斤拷)锟絕锟斤拷锟斤拷n锟斤拷锟絶锟絉锟斤拷锟揭傦拷要锟絎(xu锟斤拷)锟斤拷(hu锟斤拷)“锟斤拷锟斤拷锟斤拷锟�”锟斤拷通锟絕(gu锟斤拷)锟斤拷(g锟斤拷u)锟絶锟斤拷锟斤拷锟絑(y锟斤拷)锟斤拷锟斤拷锟斤拷锟絰锟斤拷同位锟絑(y锟斤拷)锟斤拷锟斤拷(du锟斤拷)锟饺ｏ拷锟斤拷锟�锟斤拷锟斤拷锟絉(sh锟斤拷)锟斤拷锟斤拷锟斤拷锟侥等撅拷锟斤拷锟絖锟斤拷锟絶锟絰锟斤拷

锟斤拷锟�锟斤拷锟�.锟斤拷x锟斤拷锟解常見(ji锟斤拷n)锟斤拷(w锟斤拷n)锟絵锟斤拷原锟斤拷锟斤拷锟�

锟斤拷锟斤拷锟斤拷(w锟斤拷n)锟絵一锟斤拷锟窖斤拷(j锟斤拷ng)锟揭岋拷(du锟斤拷)锟斤拷锟絵锟斤拷锟絚原锟侥岋拷(du锟斤拷)锟斤拷(y锟斤拷ng)處锟斤拷锟斤拷锟竭�锟斤拷锟絜(cu锟斤拷)锟斤拷

锟斤拷锟斤拷原锟斤拷

锟斤拷锟�锟斤拷倬锟斤拷_锟斤拷位锟斤拷要锟斤拷锟斤拷锟斤拷锟斤拷锟侥嗭拷(w锟斤拷n)锟絵锟斤拷锟斤拷锟斤拷锟斤拷息锟絶锟斤拷位之锟斤拷锟斤拷要锟斤拷锟斤拷锟斤拷锟竭壿嬶拷P(gu锟斤拷n)系锟斤拷弄锟斤拷锟斤拷思锟斤拷

锟斤拷锟斤拷锟节學(xu锟斤拷)锟斤拷(hu锟斤拷)锟斤拷锟絰锟�(xi锟斤拷ng)锟侥凤拷锟斤拷锟斤拷

锟斤拷锟斤拷a锟斤拷锟斤拷锟斤拷锟絅锟斤拷原锟斤拷锟斤拷思锟斤拷锟絰锟�(xi锟斤拷ng)锟斤拷

锟斤拷锟斤拷b锟斤拷去锟斤拷锟絰锟�(xi锟斤拷ng)锟絞锟斤拷锟斤拷同锟斤拷息锟斤拷锟斤拷(zhu锟斤拷n)锟絋(m锟斤拷n)锟絇(gu锟斤拷n)注锟絕(q锟斤拷)锟絜锟絚(di锟斤拷n)锟斤拷

锟斤拷锟斤拷c锟斤拷锟斤拷锟斤拷锟斤拷H锟斤拷

锟斤拷锟斤拷d锟斤拷锟斤拷锟斤拷潭却锟叫★拷锟斤拷锟�(qi锟斤拷ng)锟斤拷锟絇(gu锟斤拷n)注锟絰锟�(xi锟斤拷ng)锟叫憋拷锟�(n锟斤拷i)锟捷的嗭拷锟絶锟斤拷

锟斤拷锟斤拷e锟斤拷锟斤拷锟藉范锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟絯還锟角局诧拷锟斤拷

锟斤拷锟斤拷锟斤拷锟絣锟斤拷锟絚(di锟斤拷n)一锟斤拷锟斤拷锟絖锟絰锟�(xi锟斤拷ng)锟斤拷锟斤拷

锟斤拷锟斤拷锟斤拷锟斤拷x锟斤拷锟斤拷膫淇硷拷^(gu锟斤拷)锟斤拷锟叫ｏ拷锟斤拷锟絖锟斤拷x锟斤拷锟解常锟絆(sh锟斤拷)锟絰锟�(xi锟斤拷ng)锟斤拷锟斤拷锟斤拷锟角匡拷锟劫滐拷(zh锟斤拷n)锟絖锟絠锟斤拷锟金案碉拷锟絇(gu锟斤拷n)锟絀锟斤拷锟竭匡拷英锟絑(y锟斤拷)锟斤拷x锟斤拷锟斤拷锟斤拷锟斤拷_锟絰锟�(xi锟斤拷ng)一锟斤拷通锟絕(gu锟斤拷)锟斤拷锟斤拷途锟斤拷锟絆(sh锟斤拷)锟矫ｏ拷

锟斤拷锟斤拷锟絇(gu锟斤拷n)锟絀锟絶直锟接忥拷(f锟斤拷)锟紽(xi锟斤拷n)锟斤拷直锟接忥拷(f锟斤拷)锟紽(xi锟斤拷n)锟�(l锟斤拷i)锟缴從嗭拷(w锟斤拷n)锟絵锟斤拷锟揭碉拷锟絇(gu锟斤拷n)锟絀锟絶锟斤拷锟皆此為線锟斤拷锟斤拷锟絓(y锟斤拷n)锟斤拷锟斤拷锟絰锟斤拷锟斤拷閱的硷拷锟斤拷迅锟劫讹拷位锟斤拷锟斤拷锟斤拷锟斤拷锟�(l锟斤拷i)锟絵目锟絕锟介簡(ji锟斤拷n)锟斤拷锟斤拷锟斤拷锟斤拷锟絣锟绞诧拷锟斤拷锟斤拷

锟斤拷锟斤拷锟斤拷(du锟斤拷)原锟斤拷锟絇(gu锟斤拷n)锟絀锟絶锟組(j锟斤拷n)锟斤拷同锟絰锟紻(zhu锟斤拷n)锟絈锟斤拷锟斤拷話锟斤拷锟絝(shu锟斤拷)锟酵硷拷(x锟斤拷)锟斤拷(ji锟斤拷)锟斤拷锟斤拷锟斤拷锟斤拷锟�(l锟斤拷i)锟絵目锟借對(du锟斤拷)原锟斤拷锟斤拷息锟組(j锟斤拷n)锟叫滐拷(zh锟斤拷n)锟絖锟斤拷锟解并锟斤拷(ji锟斤拷n)锟斤拷锟斤拷锟斤拷锟斤拷锟絕锟斤拷锟絶锟絰锟斤拷锟絶锟皆硷拷锟絑(y锟斤拷)锟紹(t锟斤拷i)锟斤拷變锟斤拷锟斤拷锟紷锟斤拷锟斤拷锟絵锟剿筹拷锟矫碉拷锟絆(sh锟斤拷)锟絵锟斤拷式锟斤拷锟斤拷(f锟斤拷)锟斤拷(x锟斤拷)锟絩(sh锟斤拷)锟斤拷(y锟斤拷ng)锟斤拷锟斤拷英锟絑(y锟斤拷)锟侥讹拷N锟斤拷锟絖(d锟斤拷)锟斤拷锟斤拷

锟斤拷锟斤拷一锟斤拷同锟絰锟紻(zhu锟斤拷n)锟斤拷

锟斤拷锟斤拷锟侥斤拷锟斤拷锟斤拷母呖锟斤拷}锟斤拷(l锟斤拷i)锟斤拷锟斤拷锟斤拷(x锟斤拷)锟斤拷(ji锟斤拷)锟斤拷锟斤拷锟絵锟斤拷锟紿锟斤拷(sh锟斤拷)锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟統锟斤拷也锟斤拷锟叫加达拷锟斤拷锟斤拷要锟斤拷锟紽(xi锟斤拷n)锟斤拷锟絵目锟斤拷息锟絚原锟斤拷锟斤拷息锟斤拷锟絖(d锟斤拷)锟斤拷式锟斤拷一锟铰★拷锟斤拷锟絵锟斤拷一锟斤拷锟�(hu锟斤拷)锟斤拷(du锟斤拷)锟斤拷锟铰硷拷(x锟斤拷)锟斤拷(ji锟斤拷)锟斤拷锟斤拷锟紻(zhu锟斤拷n)锟斤拷锟斤拷(l锟斤拷i)锟斤拷锟介考锟斤拷锟斤拷(zh锟斤拷n)锟絖锟斤拷锟解細(x锟斤拷)锟斤拷(ji锟斤拷)锟斤拷锟斤拷锟斤拷锟斤拷锟紻(zhu锟斤拷n)锟斤拷锟斤拷锟斤拷要锟斤拷式锟斤拷锟斤拷锟斤拷锟斤拷锟絅锟斤拷

锟斤拷锟斤拷1锟斤拷同锟絰锟絶锟紻(zhu锟斤拷n)锟斤拷锟斤拷锟斤拷原锟斤拷锟叫碉拷一些锟絶锟絈锟斤拷锟斤拷锟絰锟斤拷锟斤拷锟斤拷~锟斤拷锟絆(sh锟斤拷)锟斤拷锟斤拷锟絖锟絰锟�(xi锟斤拷ng)锟斤拷

锟斤拷锟斤拷2锟斤拷锟絶锟皆伙拷锟絑(y锟斤拷)锟紹(t锟斤拷i)锟饺碉拷變锟斤拷锟斤拷锟斤拷原锟斤拷锟叫碉拷锟絶變锟絈一锟斤拷锟絶锟斤拷锟斤拷锟斤拷锟竭革拷變?c锟斤拷)锟斤拷木锟斤拷拥锟斤拷Z(y锟斤拷)锟紹(t锟斤拷i)锟斤拷锟斤拷锟斤拷一锟絅锟斤拷锟絖(d锟斤拷)锟紻(zhu锟斤拷n)锟斤拷原锟斤拷锟斤拷息锟斤拷

锟斤拷锟斤拷3锟斤拷锟絑(y锟斤拷)锟皆猴拷(ji锟斤拷n)锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷原锟斤拷锟叫的忥拷(f锟斤拷)锟絪锟絑(y锟斤拷)锟皆現(xi锟斤拷n)锟斤拷锟組(j锟斤拷n)锟叫猴拷(ji锟斤拷n)锟斤拷锟斤拷锟斤拷锟斤拷蔀锟斤拷锟斤拷_锟金案★拷

锟斤拷锟斤拷锟斤拷1.(2019·全锟斤拷(gu锟斤拷)锟斤拷锟斤拷)In a study describing the technology, the researchers had 100 volunteers type the word “touch” four times using the smart keyboard. Data collected from the device could be used to recognize different participants based on how they typed, with very low error rates. The researchers say that the keyboard should be pretty straightforward to commercialize and is mostly made of inexpensive, plastic-like parts. The team hopes to make it to market in the near future.

锟斤拷锟斤拷30锟斤拷What do the researchers expect of the smart keyboard?

锟斤拷锟斤拷A锟斤拷It’ll be environment-friendly.

锟斤拷锟斤拷B锟斤拷It’ll reach consumers soon.

锟斤拷锟斤拷C锟斤拷It’ll be made of plastics.

锟斤拷锟斤拷D锟斤拷It’ll help speed up typing.

锟斤拷锟斤拷锟斤拷锟金案★拷B

锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷(x锟斤拷)锟斤拷(ji锟斤拷)锟斤拷锟斤拷锟絵锟斤拷锟斤拷锟斤拷(j锟斤拷)锟较讹拷锟叫碉拷锟斤拷锟揭伙拷锟�“The team hopes to make it to market in the near future.”锟斤拷知锟斤拷該锟叫撅拷锟紽(tu锟斤拷n)锟�(du锟斤拷)希锟斤拷锟节诧拷锟矫的岋拷锟斤拷(l锟斤拷i)锟斤拷锟斤拷锟斤拷锟絀锟絇(p锟斤拷n)锟斤拷锟斤拷锟叫堬拷(ch锟斤拷ng)锟斤拷锟斤拷锟絰B锟斤拷

锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷話锟斤拷锟絝(shu锟斤拷)

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锟斤拷锟斤拷1锟斤拷It looks/sounds like/as if锟�(l锟斤拷i)锟斤拷锟斤拷示锟斤拷/聽(t锟斤拷ng)锟斤拷锟斤拷(l锟斤拷i)锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷(sh锟斤拷)锟紿锟较诧拷锟斤拷锟角★拷

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锟斤拷锟斤拷4锟斤拷锟斤拷锟斤拷(w锟斤拷n)锟戒。

锟斤拷锟斤拷锟斤拷2.(2019·锟斤拷锟斤拷锟斤拷)The problem of robocalls has gotten so bad that many people now refuse to pick up calls from numbers they don’t know. By next year, half of the calls we receive will be scams(锟斤拷锟絧). We are finally waking up to the severity of the problem by supporting and developing a group of tools, apps and approaches intended to prevent scammers from getting through. Unfortunately, it’s too little, too late. By the time these “solutions”(锟斤拷Q锟斤拷锟斤拷) become widely available, scammers will have moved onto cleverer means. In the near future, it’s not just going to be the number you see on your screen that will be in doubt. Soon you will also question whether the voice you’re hearing is actually real.

锟斤拷锟斤拷38锟斤拷How does the author feel about the solutions to the problem of robocalls?

锟斤拷锟斤拷A锟斤拷Panicked.锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷    B锟斤拷Confused.

锟斤拷锟斤拷C锟斤拷Embarrassed.     D锟斤拷Disappointed.

锟斤拷锟斤拷锟斤拷锟金案★拷D

锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟叫旓拷锟絵锟斤拷锟斤拷锟斤拷(j锟斤拷)锟较讹拷锟叫碉拷“By the time these ‘solutions’(锟斤拷Q锟斤拷锟斤拷) become widely available, scammers will have moved onto cleverer means.”锟斤拷知锟斤拷锟饺碉拷锟紷些“锟斤拷Q锟斤拷锟斤拷”锟斤拷锟絍锟斤拷使锟矫時(sh锟斤拷)锟斤拷锟斤拷锟斤拷锟斤拷锟接就曪拷(hu锟斤拷)锟紻(zhu锟斤拷n)锟斤拷锟铰旓拷锟斤拷锟斤拷侄锟�锟斤拷锟缴此匡拷锟斤拷知锟斤拷锟竭岋拷(du锟斤拷)锟皆勶拷(d锟斤拷ng)锟絑(y锟斤拷)锟斤拷锟皆掞拷锟�(w锟斤拷n)锟絵锟侥斤拷Q锟斤拷锟斤拷锟叫碉拷锟斤拷失锟斤拷锟斤拷D锟�(xi锟斤拷ng)锟斤拷锟�“失锟斤拷锟斤拷”锟斤拷锟斤拷锟絰D锟斤拷

锟斤拷锟斤拷3. 锟斤拷锟斤拷锟斤拷锟�

锟斤拷锟斤拷锟斤拷x锟斤拷锟斤拷锟斤拷丝锟斤拷榭硷拷锟斤拷锟�(du锟斤拷)锟斤拷(x锟斤拷)锟斤拷(ji锟斤拷)锟斤拷息锟侥滐拷(zh锟斤拷n)锟絖锟斤拷锟斤拷锟斤拷锟斤拷 還要锟斤拷锟斤拷通锟絕(gu锟斤拷)思锟絊锟斤拷锟斤拷锟斤拷锟斤拷息锟組(j锟斤拷n)锟叫歸锟絳锟斤拷锟斤拷锟斤拷使之系锟統(t锟斤拷ng)锟斤拷锟斤拷锟絣锟斤拷锟斤拷锟斤拷

锟斤拷锟斤拷锟斤拷3.(2019·锟姐江锟斤拷)California has lost half its big trees since the 1930s, according to a study to be published Tuesday and climate change seems to be a major factor(锟斤拷锟斤拷)锟斤拷

锟斤拷锟斤拷The number of trees larger than two feet across has declined by 50 percent on more than 46, 000 square miles of California forests, the new study finds. No area was spared or unaffected, from the foggy northern coast to the Sierra Nevada Mountains to the San Gabriels above Los Angeles. In the Sierra high country, the number of big trees has fallen by more than 55 percent; in parts of southern California the decline was nearly 75 percent.

锟斤拷锟斤拷Many factors contributed to the decline,  said Patrick McIntyre, an ecologist who was the lead author of the study. Woodcutters targeted big trees. Housing development pushed into the woods. Aggressive wildfire control has left California forests crowded with small trees that compete with big trees for resources(锟結源)锟斤拷

锟斤拷锟斤拷But in comparing a study of California forests done in the 1920s and 1930s with another one between 2001 and 2010, McIntyre and his colleagues documented a widespread death of big trees that was evident even in wildlands protected from woodcutting or development.

锟斤拷锟斤拷The loss of big trees was greatest in areas where trees had suffered the greatest water shortage. The researchers figured out water stress with a computer model that calculated how much water trees were getting in comparison with how much they needed, taking into account such things as rainfall, air temperature, dampness of soil, and the timing of snowmelt(锟斤拷雪)锟斤拷

锟斤拷锟斤拷Since the 1930s, McIntyre said, the biggest factors driving up water stress in the state have been rising temperatures, which cause trees to lose more water to the air, and earlier snowmelt, which reduces the water supply available to trees during the dry season.

锟斤拷锟斤拷30锟斤拷What can be a suitable title for the text?

锟斤拷锟斤拷A锟斤拷California’s Forests: Where Have All the Big Trees Gone?

锟斤拷锟斤拷B锟斤拷Cutting of Big Trees to Be Prohibited in California Soon

锟斤拷锟斤拷C锟斤拷Why Are the Big Trees Important to California Forests?

锟斤拷锟斤拷D锟斤拷Patrick McIntyre: Grow More Big Trees in California

锟斤拷锟斤拷锟斤拷锟金案★拷A

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