三羧酸循环中____、____和____三种酶所催化的反应是限速反应。
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磷酸戊糖途径的起始代谢物是____,整个途径分为____和____两个阶段。
Try to guess the meaning of the underlined word in each of the following sentences according to word analysis.1.He says he is an atheist.
A. one who believes in one god
B. one who believes in no god
C. one who believes in many gods
D. one who believes in nobody
If something is immortal, it will never .
A. live
B. move
C. die
D. eat
If a man is bigamist, he .
A. has two children
B. will never marry
C. is married to two women
D. is very tall
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