单项选择题

Over the past decades, sea ice （） in the Arctic (北极) as a result of global warming.

A．had decreased
B．will decrease
C．has been decreasing
D．is decreasing

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单项选择题
The company is starting a new advertising campaign to（）new customers to its stores.

A．join
B．attract
C．stick
D．transfer
单项选择题
In our daily life, everyone fails every now and then. It is how you react that makes a（）.

A．development
B．difference
C．progress
D．point
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