除核心筒壁外，电梯间内至少应有 ( )道剪力墙的连梁。
A．1
B．2
C．3
D．4
参考答案：B
扪诊牙龈肿胀有波动感的方法是
A．棉球口内扪诊
B．单指口内扪诊
C．二指口内扪诊
D．二指口外扪诊
E．双手口外扪诊
语调。根据所给句子选择正确的语调。
A. 升调 B. 降调 C. 升、降调 D. 降、升调
( )1. We have a nice house and a happy family.
( )2. Are the gloves yellow or blue?
( )3. They don't have computers.
( )4. Is this your cap?
( )5. He is my new friend.
