英国伦敦协会货物保险新条款共有()条。
A.17
B.18
C.19
D.20
参考答案:C
The shop owner welcomed all the guests with a __________ smile.
A.practice
B.practise
C.practical
D.practiced
7.1+7.01+7.001+7.0001的值是()
A.28.1111
B.28.0011
C.28.1011
D.28.111