题目内容：
Both the kids and their parents __________English, I think. I know it from their accent.选择一项：
A. is
B. been
C. are
参考答案：
选择题：Both the kids and their parents __________English,
- 题目分类：人文英语4
- 题目类型：选择题
- 查看权限：VIP
选择一项：
A. is
B. been
C. are
选择一项：
A. is
B. been
C. are
The charity originally means to ____.选择一项：A. help
The charity originally means to ____.选择一项：A. help clients return to normal lifeB
已知一对外啮合渐开线直齿圆柱标准齿轮传动，z1=20，z2=40，m=10mm， a=20°，ha*
已知一对外啮合渐开线直齿圆柱标准齿轮传动，z1=20，z2=40，m=10mm， a=20°，ha*=1，c*=0.25，试求：齿轮1的分度圆半径r1；基圆半径
Zhang Hua himself _________ bear some (/any) respo
Zhang Hua himself _________ bear some (/any) responsibility.选择一项：A. mustn.tB. sh
且夫我尝闻少仲尼之闻而轻伯夷之义者 闻：
且夫我尝闻少仲尼之闻而轻伯夷之义者 闻：
闭式软齿面齿轮传动，一般按（ ）设计
闭式软齿面齿轮传动，一般按（ ）设计 A.齿根弯曲疲劳强度 B.齿面接触疲劳强度 C.齿面胶合 D.塑性变形