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【单选题】
下列关于酶的叙述，错误的是A.
酶促反应具有特异性
B.
酶能对其特异底物起高效催化作用
C.
所有的酶都是蛋白质
D.
酶是机体内催化各种代谢反应最主要的催化剂
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皮皮学刷刷变学霸
举一反三
【单选题】If your friend tells a lie to you, you should . [ ]
A.
tell a lie, too
B.
talk with him and find out the reason
C.
hit him on the head with a stone
【单选题】My parents often ask me a lie and to be honest child. [ ]
A.
not to tell; a
B.
not to tell; an
C.
to not tell; a
D.
to tell; an
【单选题】I really regret ___to you, but at that time, I had no choice but ____.
A.
to tell a lie; do so
B.
telling a lie ; to do so
C.
tell a lie; to do so
D.
telling a lie; do so
【单选题】The way (which) the different kinds of rock (lie on) (one another) helps to tell the story (of long ago).
A.
which
B.
lie on
C.
one another
D.
of long ago
【单选题】The doctor was in a____as to whether to tell the patient the truth or a lie.
A.
prudence
B.
dilemma
C.
secrecy
D.
psychology
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