DNA的复制是在细胞间期的（）.
A.G1期
B.S期
C.分生孢子器CG2期
D.以上都不是
参考答案：B
水解后能产生氢氰酸的是( )
A．N-苷 B．S-苷 C．C-苷 D．酯苷 E．氰苷
Which of the following statements is NOT true
A．Quacks are really sympathetic.
B．"Snake oil" does not work.
C．Doctors cannot cure all ills.
D．Patients are often impatient.
