(2013·东北三校4月联考)—Car prices have been going down sharply in the last 20 years.—It
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(2013·东北三校4月联考)—Car prices have been going down sharply in the last 20 years.
—It"s not surprising because the law of market ________ the price of a product.| A．is controlling | B．controls | | C．has controlled | D．controlled |
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答案
| B |
解析
| B 句意：“汽车的价格在过去的20年急剧下降。”“这一点也不奇怪，因为市场规律决定产品的价格。”“市场规律决定产品的价格”说的是一个客观事实，因此用一般现在时。 |
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Other genetic similarities suggested they all ________ a single, common ancestor about 300 years ago.| A．had | B．have had | C．have | D．had had |
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