中学生网络课堂本课配套习题挑战模式2/5
单选题
难度系数：
2.
___ are planning to go on vacation.
| A: Black's |
| B: A Black's |
| C: The Black's |
| D: The Blacks |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5aeT5rCP5aSN5pWw77yM5oOz5Yiw5a6a5Yag6K+N5Y+j6K+A4oCc5aeT5aSN5pa55L2N5YmN4oCd44CCPC9wPg==
- 答案：RA==
PHA+5Yag6K+N55qE6ICD5a+f44CCdGhl5Yqg5aeT55qE5aSN5pWw5b2i5byP6KGo56S64oCc5LiA5a625Lq64oCd77yM6YCJROOAgjxicj48L3A+
本课配套习题挑战模式3/5
单选题
难度系数：
3.
-Is ___ magazine yours, Joe？
-No, I don't have ___ magazine.
| A: a; a |
| B: the; the |
| C: the; a |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+56ys5LiA5Y+l77ya6L+Z5pys5p2C5b+X5piv5L2g55qE5ZCX77yf6ICD5a+f4oCc54m55a6a5Y+M54af5oKJ4oCd44CCPGJyPjwvcD4=
- 答案：Qw==
PHA+6ICD5p+l5Yag6K+N44CC6Zeu5Y+lOui/meaYr+S9oOeahOadguW/l+WQl++8jEpvZe+8n+ihqOekuuWPjOaWuemDveefpemBk+eahOWvueixoeimgeeUqHRoZemZkOWumuOAguetlOWPpe+8muS4jeaYr++8jOaIkeayoeacieadguW/l+OAguKAnOS4jeWumuWGoOivjSvlj6/mlbDlkI3or43ljZXmlbDigJ3ms5vmjIfmn5DkuIDnsbvliKvjgII8L3A+
本课配套习题挑战模式5/5
单选题
难度系数：
5.
The young man plays ___ violin very well, but he plays basketball badly.
| A: an |
| B: / |
| C: a |
| D: the |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+VmlvbGlu5piv6KW/5rSL5LmQ5Zmo44CCPC9wPg==
- 答案：RA==
PHA+6ICD5p+l5Yag6K+N55qE55So5rOV44CC5LiO6KW/5rSL5LmQ5Zmo5pyJ5YWz55qE5LiA5b6L5YqgdGhl44CC5pys5Y+l5piv4oCc6L+Z5L2N5bm06L275Lq65by56ZKi55C05by55b6X5LiN6ZSZ77yM5L2G5LuW5omT56+u55CD5omT5b6X5LiN5aW944CC4oCd77yM5pWF6YCJROOAgjwvcD4=
