单项选择题

From the development history of the toy we can know that ______.

A．it was the first product that appeared in an advertisement on TV
B．it was entirely made of plastic in 1960
C．many forms of it have been designed before 1982
D．it is not one kind of toy any more at last

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热门试题

单项选择题

We learn from the passage that the original form of Mr. Potato Head ______.

A．was very ugly and refused by customers
B．was designed during the World War Ⅱ era
C．was completely made of eatable potatoes
D．was made up of several separate parts

单项选择题

Which fact can prove what Newton proposed was right

A．The departing ships seemed to be smaller and smaller when they sailed away.
B．The greater a concentration of mass is at the poles, the stronger its gravitational pull.
C．The length from Earth's center to sea level at tile equator is longer than that at the poles.
D．The changes in the rising of a few millimeters on Earth's surface detected by modern devices.