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【单选题】
由哪个科学家实施的哪个实验标志着基因工程技术建立A.
1973年，博耶和科恩选用仅含单一EcoRI酶切位点的载体质粒pSC101，使之与非洲爪蟾核糖体蛋白质基因的DNA片段重组。重组的DNA转入大肠杆菌DNA中，转录出相应的mRNA。
B.
1965年桑格发明氨基酸序列分析技术
C.
1997年多利羊的诞生
D.
1972年伯格首先在体外进行了DNA改造的研究，成功地构建了第一个体外重组DNA分子。
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【单选题】Why was the Taj Mahal built?
A.
In memory of a princess
B.
In honor of a great emperor
C.
To mark the death of an emperor of the 1600s
D.
To celebrate the birth of a princess’s 14th child
【单选题】Why was Taj Mahal (泰姬陵) listed in UNESCO world heritage site ?
A.
For it represents the highest Buddhist art.
B.
For it cost millions of rupees.
C.
For it is the jewel of Muslim art in India.
D.
For it is a symbol of Thailand's rich history.
【简答题】The Taj Mahal was first built as __________.
【简答题】The Taj Mahal Shah Jahan finished building Taj Mahal in 18. He was a rich and powerful emperor, and he built the Taj Mahal as a memorial for his wife. 小题1: The word “taj” means crown, “Mahal” was th...
【单选题】Why was the Taj Mahal built?
A.
In honor of a great emperor.
B.
In memory of a princess.
C.
To mark the death of an emperor of the 1600s.
D.
To celebrate the birth of a princess’s 14th child.
【简答题】阅读理解。 THE TAJ 100 years of pictures THEN AND NOW See the Taj in history from 1900 to 2000 Photography show City Art Museum 720 High Street Tuesday to Sunday 10am to 5pm AFRICAN SA FART PARK A Drive-th...
【单选题】右图反映了甲药品当前的市场供求状况(当前价格为P0)。若此时政府对甲药品进行最高价格限制,不考虑其他因素影响,下列分析正确的是( ) 1若最高限价为P1,则限价对甲药品供求不产生影响 2若最高限价为P1,则甲药品价格上涨,可能导致供过于求 3若最高限价为P2,则甲药品价格下降,可能出现市场短缺 4若最高限价为P2,则甲药品的生产企业会普遍亏损
A.
①②
B.
②④
C.
③④
D.
①③
【简答题】The TAJ 100 years of pictures THEN AND NOW See the Taj in history from 19：00 to 20：00 Photography Show City Art Museum 720 High Street Tuesday to Sunday 10 a．m to 5 p．m AFRICAN SAFARI PARK A Driver-...
【单选题】右图反映了甲药品当前的市场供求状况 ( 当前价格为 P0) 。若此时政府对甲药品进行最高价格限制 , 不考虑其他因素影响 , 下列分析正确的是 ( ) 1 若最高限价为 P1, 则限价对甲药品供求不产生影响 2 若最高限价为 P1, 则甲药品价格上涨 , 可能导致供过于求 3 若最高限价为 P2, 则甲药品价格下降 , 可能出现市场短缺 4 若最高限价为 P2, 则甲药品的生产企业会普遍亏损
A.
①②
B.
②④
C.
③④
D.
①③
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