鎵嬫満APP涓嬭浇

鎮ㄧ幇鍦ㄧ殑浣嶇疆锛 棣栭〉 > SAT > SAT姣忔棩涓棰 > 姝f枃

快三的几个规律—官方网址22270.COM_SAT瀹樻柟姣忔棩涓棰橀檮绛旀鍜岃В鏋怺鍐欎綔](2019骞12鏈2鏃)

鏉ユ簮:璐靛窞蹇笁鎵嬫満app鈥斿畼鏂圭綉鍧22270.COM璐靛窞蹇笁鎵嬫満app鈥斿畼鏂圭綉鍧22270.COM鑻辫 缂栬緫:max 锘  VIP鍏嶈垂澶栨暀璇曞惉璇 |  璐靛窞蹇笁鎵嬫満app鈥斿畼鏂圭綉鍧22270.COM璐靛窞蹇笁鎵嬫満app鈥斿畼鏂圭綉鍧22270.COM瀹樻柟寰俊:ikekenet

Writing & Language

Some plant pathologists have turned to genetic engineering to devise new ways of responding to botanical diseases. Plant pathologist William Powell, for instance, teamed up with forest biologist Chuck Maynard to restore North America's population of American chestnut trees, which was decimated in the early 1900s by a fungus known as chestnut blight. A fungus, C. parasitica, contributes to the growth of cankers on the trees' trunks; these cankers, in turn, prevent a tree from transporting water from their roots to their branches and leaves. To render American chestnut trees resistant to the blight, Powell and Maynard experimented with altering the genetic makeup of the trees. The resultant genetically engineered trees are called Darling 4 American chestnut trees, and during the first 15 weeks after infection with chestnut blight, they grow cankers that are much smaller than those that grow on American chestnut trees.

A.NO CHANGE
B.trees
C.that tree
D.it

閲嶇偣鍗曡瘝   鏌ョ湅鍏ㄩ儴瑙i噴    
devise [di'vaiz]

鎯充竴鎯冲啀鐪

vt. 璁捐锛屽彂鏄庯紝閬楄禒缁
n. 閬楄禒锛

鑱旀兂璁板繂
restore [ri'stɔ:]

鎯充竴鎯冲啀鐪

vt. 鎭㈠锛屼慨澶嶏紝浣垮鍘

 
prevent [pri'vent]

鎯充竴鎯冲啀鐪

v. 棰勯槻锛岄槻姝

鑱旀兂璁板繂
fungus ['fʌŋgəs]

鎯充竴鎯冲啀鐪

n. 鐪熻弻锛岄湁鑿 锛堝鏁颁负funguses鎴杅ungi)

 
infection [in'fekʃən]

鎯充竴鎯冲啀鐪

n. 浼犳煋锛屽奖鍝嶏紝浼犳煋鐥

鑱旀兂璁板繂
genetically [dʒe'netikəli]

鎯充竴鎯冲啀鐪

adv. 閬椾紶(鍩哄洜)鏂归潰

 
genetic [dʒi'netik]

鎯充竴鎯冲啀鐪

adj. 鍩哄洜鐨勶紝閬椾紶鐨勶紝璧锋簮鐨

鑱旀兂璁板繂
resistant [ri'zistənt]

鎯充竴鎯冲啀鐪

adj. 鎶垫姉鐨勶紝鍙嶆姉鐨
n. 鎶垫姉鑰

鑱旀兂璁板繂
consistent [kən'sistənt]

鎯充竴鎯冲啀鐪

adj. 濮嬬粓濡備竴鐨勶紝涓鑷寸殑锛屽潥鎸佺殑

鑱旀兂璁板繂
population [.pɔpju'leiʃən]

鎯充竴鎯冲啀鐪

n. 浜哄彛 锛(鍏ㄤ綋)灞呮皯锛屼汉鏁

鑱旀兂璁板繂

鏂颁笢鏂筍AT缃戠粶璇剧▼:璇曞惉鏇村SAT缃戠粶璇剧▼>>

鍙戝竷璇勮鎴戞潵璇2鍙

    璐靛窞蹇笁鎵嬫満app鈥斿畼鏂圭綉鍧22270.COM璐靛窞蹇笁鎵嬫満app鈥斿畼鏂圭綉鍧22270.COM鑻辫瀹樻柟寰俊(寰俊鍙:ikekenet)

    姣忓ぉ鍚戝ぇ瀹舵帹閫佺煭灏忕簿鎮嶇殑鑻辫瀛︿範璧勬枡.

    娣诲姞鏂瑰紡1.鎵弿涓婃柟璐靛窞蹇笁鎵嬫満app鈥斿畼鏂圭綉鍧22270.COM璐靛窞蹇笁鎵嬫満app鈥斿畼鏂圭綉鍧22270.COM瀹樻柟寰俊浜岀淮鐮併
    娣诲姞鏂瑰紡2.鎼滅储寰俊鍙ikekenet娣诲姞鍗宠吹宸炲揩涓夋墜鏈篴pp鈥斿畼鏂圭綉鍧22270.COM銆