皮皮学，免费搜题
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搜题
【单选题】
增强子的作用特点是A.
只在细胞中发挥作用
B.
有固定的序列，必须在启动子上游
C.
有严格的专一性
D.
无需与蛋白质因子结合即可发挥作用
E.
作用有方向性
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】___for your help, we wouldn't have succeeded.
A.
Hadn't it been
B.
Had it not been
C.
If it had been
D.
If it were
【单选题】—What do you want to be? — I want to be a ____. I like working with people and money.
A.
bank clerk
B.
waiter
C.
teacher
D.
policeman
【单选题】______ for your help we could not have finished it in time.
A.
In spite of
B.
But for
C.
Because of
D.
As for
【单选题】关于正常人体温的波动的描述，下列哪一项是不正确的( )
A.
正常人24小时内体温略有波动，一般上下相差不超过l℃
B.
早晨体温略低，中午较高，下午又较低
C.
运动或进食后体温稍高
D.
老年人体温略低
E.
妇女在月经期前或妊娠中体温略高
【单选题】关于正常人体温的波动的描述，下列哪一项是不正确的（ ）。
A.
正常人24小时内体温略有波动，一般上下相差不超过1℃
B.
早晨体温略低，中午较高，下午又较低
C.
运动或进食后体温稍高
D.
老年人体温略低
E.
妇女在月经期前或妊娠中体温略高
【简答题】Fill in the blanks with the proper form of the words given 1. If time ( permit ) , I would write it again. 2. If you ( take ) my advice, you would not have made such a mistake. 3. If he ( come ) tomor...
【单选题】Were it not for your help, we ( ) the difficulties.
A.
would overcome
B.
have overcome
C.
overcome
D.
would not have overcome
【单选题】Thank you ______ advance for your help and we look forward to receiving your recommendations.
A.
at
B.
from
C.
in
D.
to
【简答题】阅读理解。 Mike论坛版主 积分 20878 帖子 3065 I want to be a traveler. I want to go traveling in Korea and China. I can enjoy the cultures and food in the two countries. Annie论坛版主 积分 20880 帖子 3799 James Cameron is ...
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