单项选择题

______ that they may eventually reduce the amount of labor needed on construction sites.

A．So clever are the construction robots
B．So clever the construction robots are
C．Such construction robots are clever
D．Such clever construction robots are

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单项选择题

What does the word appreciation mean

A．Evaluation
B．Enjoyment
C．Gratitude
D．Increase in value

单项选择题

Why was it difficult to get the public to accept shopping carts at first

A．Both men and women were afraid they would not look good if they used them.
B．People thought it unnecessary to use them because they never did much shopping.
C．The early shopping carts were too difficult to use.
D．Only men and women models were supposed to use such modern things.