— Would you like _____ mooncakes? — OK.

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问题选择题

— Would you like _____ mooncakes?

— OK. [ ]

A. some

B. any

C. eat some

D. eating some

答案

答案：A

选择题

—How old is the boy?

—_____.[ ]

A. He's fine

B. He's four

C. He's a student

D. He's old

填空题

填空：（填编号）

A．₃⁶Li 　 B．₇¹⁴N　 C．₁₁²³Na　 D．₁₂²⁴Mg E．₃⁷Li F．₆¹⁴C G．C₆₀ H．CH₃CH₂COOH I．HO-CH₂CH₂-CHO J．金刚石 K．P₄L．SiO₂ M．NH₄Cl

（1）______和______互为同位素；

（2）中子数相等，但不是同一种元素的是______和______；

（3）______和______互为同素异形体，______和______互为同分异构体．

（4）熔化时需要破坏共价键的是______；晶体中既有离子键又有共价键的是______．