单项选择 My sister can play soccer and I can play guitar. A. /, the B. the, the C. a, a D. the, /
I want to know _____. A. what the matter is B. what matter it is C. what's the matter D. the matter is what
The fellow was caught stealing and is nowin the police station. A. watching over B. watching out for C. being watched over D. being
下列物质能跟盐酸发生中和反应的是（ ） A．锌粒 B．氢氧化钠溶液 C．氧化铜 D．碳酸钠溶液
—Don’t smoke here, please. —_____________. A. No problem B. Never mind C. Sorry, I won’t D. Sure
Do you want tea or coffee? —______. I really don't mind. A. None B. Neither C. Either D. All
我国稀土资源丰富。下列有关稀土元素144 62Sm与150 62Sm的说法正确的是 A．144 62Sm与150 62Sm互为同位素 B．144 62Sm与150 62Sm的质量数相同 C．144 62
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