题目内容

5、初凝时间的测定，当试件沉至距离地板___时，为水泥的初凝状态。

A.4mm±1mm
B.5mm±1mm
C.6mm±1mm
D.8mm±1mm

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Shanghai, with a history dating back to the third century BC, is one of the four ________ directly under the Central Government of China.

The buildings in The Bund are harmonious in colour and style, thus gaining the name of "_______".

Nanjing Rd., famed as "________", is an epitome of Shanghai's history and culture.

The Bund refers to the 1.5-kilometre-long belt along the Huangpu River between the Waibaidu Bridge and East Yan'an Road.

A. 对
B. 错