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【单选题】
选出解说错误的一项( ) A.“夕阳下的新娘”,是说夕阳照射下的柳枝,镀上了一层妩媚的金色,那金色的枝条随风轻轻摇摆,影子倒映在水中,像一位美艳的新娘。 B.“波光里的艳影,在我的心头荡漾”,倒映在水中的,随波光一起荡漾,显得更加美艳,作者对如此美景,永远记在心上。 C.“软泥上的,油油的在水底招摇”,是说绿油油的水草在柔波中招摇,仿佛是在向诗人招手示意。 D.“揉碎在浮藻间,沉淀着彩虹似的梦”,是说天上被了的彩虹和漂浮在潭水上的水草相杂在一起,沉淀在潭水的深处,就如同彩虹似的梦一般。
A.
选择1
B.
选择2
C.
选择3
D.
选择4
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【多选题】 Wittig 反应中参与反应物质有 ( )。
A.
Wittig 试剂
B.
C.
D.
烯烃
【简答题】如何以大肠杆菌质粒DNA为载体克隆一个编码动物激素的基因,并使之在大肠杆菌中进行表达?简要说明实验中可能遇到的问题及可能的解决办法。
【单选题】Everyone wants to make a good first impression, but how important are snap judgments in the long run? Very, say communications researchers Artemio Ramirez and Mike Sunnafrank, who found that 【B1】_____...
A.
the students were asked to assess how their predictions had held up
B.
they had had only three minutes to make an assessment
C.
people judge people only at first sight
D.
how much they thought the partner liked them
E.
assessments made in the first few minutes of meeting someone strongly influence the course the relationship will take
F.
they asked the students how their relationship had been
G.
when people first meet they predict the probable outcome of the relationship
H.
they wonder why their partners didn't like them 【B1】______
【单选题】Bird Flu is a(n) ___________ disease. Whenever it occurs, children should be kept from going to public places.
A.
infectious
B.
acute
C.
serious
D.
chronic
【简答题】Agriculture is not as important to the Canadian economy as it was in the 19th century, but it continues to be the mainstay on several regions and is a significant source of export income.
【简答题】Plastic is one of the most important technological discoveries of the 20th century. However, it may soon be replaced. The new development- liquid wood- can replace plastics in all branches of modern-d...
【单选题】编码大肠杆菌的大肠菌素的质粒为
A.
致育性质粒
B.
Col质粒
C.
R质粒
D.
Vi质粒
E.
M质粒
【简答题】以大肠杆菌质粒DNA为载体克隆一个编码动物激素的基因,并使之在大肠杆中表达,通常遇到的问题是什么?
【简答题】Plastic is one of the most important technological discoveries of the 20th century.However,it may soon be replaced.The new development—liquid wood—can replace plastics in all branches of modern indust...
【单选题】妊娠合并心脏病易发生心衰的时期不包括
A.
产后3天
B.
妊娠24-28周
C.
妊娠32-34周
D.
分娩期
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