皮皮学，免费搜题
登录
搜题
【单选题】
酶原没有催化活性的原因是A.
活性中心还未形成或未暴露
B.
酶蛋白还未和辅助因子结合
C.
酶原是已经变性的蛋白质
D.
酶原只是一般蛋白质
E.
酶蛋白的合成还没有完成
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】In the sentence 'In 1902 he secured a position as an examiner in the Swiss patent office in Bern.' , the word 'secure' probably means ______.
A.
acquired
B.
attached
C.
closed
D.
fastened
【单选题】In the sentence 'Many people observed the ship leaving the harbor' , the italicized part is______.
A.
the object complement
B.
an adverbial
C.
the object
D.
an appositive
【单选题】In the sentence “I am damn proud of that fact.”, the word “damn” has the same meaning with that in the sentence__. ( )
A.
Damn it!
B.
Wait a damn minute.
C.
You are damn right.
D.
I couldn’t understand the damn film.
【单选题】Choose the best answer which is the nearest in meaning to the underlined word in the sentence I find it easier to keep a positive attitude day to day. So much more is within my influence.
A.
optimistic
B.
definite
C.
depressive
D.
right
【单选题】Which one is the prepositional phrase in the sentence "I chose a book from the library"?
A.
chose a book
B.
book from the library
C.
from the library
【简答题】类是对象的集合，它包含了相似的有关对象的特征和行为方法，而______是类的实例。
【简答题】类是对象的集合,它包含了相似的有关对象的特征和行为方法,而 ____ 是类的实例 。
相关题目：