分界线、结构围框线、功能围框线、分组围框线一般用()表示。
A.实线
B.虚线
C.点画线
D.双点画线
参考答案:C
Ted was hard-working. His success made him work_____.
A.harder
B.hardest
C.more quickly
D.most quickly
乳牙萌出完成时间
A.1岁半左右
B.2岁左右
C.2岁半左右
D.3岁左右
E.以上都不是